描述
Preface
Thank you very much for purchasing Petrokey products. To ensure safe and efficient use of the SZJ-BS SPM (Strokes Per Minute) Unit, please read this manual carefully before your first operation. This manual provides comprehensive guidance to help you make the most of the product.
This manual is published by Hubei Jianghan What’s app +8615972752793 Luben@youlongpetro.comPetroleum Instrument & Meter Co., Ltd. after careful proofreading and checking, but we cannot guarantee absolute absence of errors or imperfections. It is available in both Chinese and English; in case of any conflict between the two versions, the Chinese version shall prevail.
Hubei Jianghan Petroleum Instrument & Meter Co., Ltd. is committed to product function innovation and service quality improvement.What’s app +8615972752793 Luben@youlongpetro.com All information contained in this document is subject to change without prior notice. The statements, information, and suggestions in this manual do not constitute any express or implied warranty. The pictures in this manual are for reference only; if there is any discrepancy with the actual product, the latter shall prevail.
This manual is an integral part of the product. Please keep it properly for future reference during the product’s service life. For sections requiring special attention, eye-catching signs are used to remind operators, with the following meanings:
- Dangerous: What’s app +8615972752793Luben@youlongpetro.comAlerts users to pay close attention to subsequent notes. All operations must comply with the manual; improper operation may result in severe personal injury and accidents.
- Warning: Requires special attention to subsequent notes. Improper operation may cause serious damage to the product.
- Attention: Reminds of matters needing attention. Improper operation may cause the product to fail to operate normally.
- Explanation, Prompt and Knack: Provides necessary supplements and instructions for the operation manual.
No part of this document may be reproduced, copied, or distributed in any form without the prior written consent of Hubei JPIM Co., Ltd.What’s app +8615972752793 Luben@youlongpetro.com Translation into any other language is also prohibited without such consent.
SY®, Petrokey®, JPIM®, Petron-Jianghan®, and PTJH® are all registered trademarks of Hubei Jianghan Petroleum Instrument & Meter Co., Ltd. All other brand names and product names in this document are trademarks or registered trademarks of their respective owners.
If you encounter any discrepancy between the actual product and this document during operation, need the latest information, or have any comments or suggestions, please contact us via the provided telephone number or website.
- System Description
1.1 System Schematic Diagram
The SZJ-BS SPM Unit consists What’s app +8615972752793 Luben@youlongpetro.comof three core components with the following connection relationship:
Power Input (220/110VAC) → 220/110VAC Power Supply Board → SPM Gauge (Signal Process and Display Board) ← SPM Cable ← SPM Sensor
Figure 1: SZJ-BS SPM Unit Schematic Diagram
1.2 Technical Specifications
1.2.1 Measuring Range and Error
- Measuring Range: 0 min⁻¹ ～ 300 min⁻¹
- Measurement Error: ≤ ±1.5% FS (Full Scale)
1.2.2 Power Supply
Working Voltage: 85 VAC ～ 245 VAC, 47 Hz ～ 63 Hz
1.2.3 Working Environment
- Temperature: -30℃ ～ +70℃
- Relative Humidity: No more than 90% RH
1.3 System Composition and Working Principle
1.3.1 System Composition
The SZJ-BS SPM Unit is composed of three key componentsWhat’s app +8615972752793 Luben@youlongpetro.com that work synergistically to achieve accurate SPM measurement:
- SPM Gauge: A round, wide-temperature-resistant digital display indicator. Its internal structure mainly includes a 110/220VAC power board and a signal processing and display board. There are two aviation sockets on the back of the gauge: a 3-conductor socket for power input and a 4-conductor socket for signal input.
- SPM Sensor: Adopts a non-contact measurement method, consisting of a proximity sensing switch assembly, junction box, probe housing, and other components. The sensor’s detailed components are listed in Table 1, and its structure is shown in Figure 2.
- SPM Cable: What’s app +8615972752793Luben@youlongpetro.comFeatures oil resistance, corrosion resistance, and flame retardancy. The connectors and plugs are waterproof to ensure reliable signal transmission in harsh working environments.
Figure 2: SPM Sensor Structure
| No. |
Part Number |
Component Name |
| 1 |
SZJ-ZS.1-1 |
Cover |
| 2 |
2-148 |
O Ring (69.52×2.62) |
| 3 |
SZJ-ZS.1-2 |
Junction Box |
| 4 |
SZJ-ZS.1-3 |
Screw Barrel |
| 5 |
SZJ-ZS.1-4 |
Nut |
| 6 |
SZJ-ZS.1A-1 |
Screw |
| 7 |
SZJ-ZS.1-6 |
Screw Barrel |
| 8 |
SZJ-ZS.1-7 |
Nut |
| 9 |
SZJ-ZS.1A-2 |
Probe Housing |
| 10 |
– |
Proximity Switch |
| 11 |
SZJ-ZS.1-9 |
Connector |
| 12 |
– |
Four-Core Socket |
Table 1: Component List of SPM Sensor
1.3.2 Working Principle
The SZJ-BS SPM Unit operates based on non-contact sensing and signal processing technology, following this principle:
- When a metal target passes through the sensing area of the SPM sensor, the sensor generates a pulse signal.
- The pulse signal is transmitted to the signal processing and display board of the SPM gauge via the SPM cable.
- The signal processing and display board processes and calculates the received pulse signal to obtain the current SPM value, What’s app +8615972752793Luben@youlongpetro.comwhich is then displayed on the gauge’s digital screen.
Figure 3: SPM Sensor Wiring Diagram
Wiring Notes for Four-Core Socket:
- Pin 1: Signal
- Pin 2: 8.2VDC (Power+)
- Pin 4: Shielded Cable
- Proximity Sensing Switch Wiring: Blue wire for Signal, Brown wire for Power+ (8.2V)
1.4 Installation, Adjustment and Operation
1.4.1 Installation of SPM Sensor
The SPM sensor can be installed in two common positions: the mud pump crosshead cover plate and the mud pump drive shaft. Follow the corresponding steps for installation:
Installation on the Mud Pump Crosshead Cover Plate
- Open the crosshead cover plate of the mud pump. What’s app +8615972752793Luben@youlongpetro.comTighten a metal target onto the crosshead inside the pump using a bolt (the bolt itself can also serve as the target).
- Drill a 28mm-diameter round hole in the cover plate directly opposite the target, then install the SPM sensor.
- Start the pump; the crosshead will move back and forth. When the crosshead reaches its extreme position, ensure the distance between the target and the sensor is 5～10mm (see Figure 4).
- Sensor Distance Adjustment:
If adjustment is needed, What’s app +8615972752793 Luben@youlongpetro.comfirst open the junction box and disconnect the sensor wires to avoid damage.
- Install the sensor, tighten the nuts fixing it to the cover plate, and retract the probe to maintain a gap of 1cm or more between the probe and the crosshead.
- Keep the crosshead stationary, reinstall the cover plate, and tighten all screws. Ensure the probe center is aligned with the target.
- Turn the sensor’s long screw inward until the probe slightly touches the target, then turn it outward 3～5 rounds to achieve the 5～10mm gap requirement.
- Apply packing seal at Position A of the junction box to prevent rainwater ingress.
Figure 4: Installation of SPM Sensor on the Crosshead of Mud Pump
Components in Figure 4: Cover Plate of the Crosshead, Mud Pump, Sensor, Crosshead Cover Plate, 5-10mm Gap, What’s app +8615972752793 Luben@youlongpetro.comCrosshead, Target, Signal Connector
Installation on the Mud Pump Drive Shaft
- Weld a metal target at a suitable position on the mud pump drive shaft.What’s app +8615972752793Luben@youlongpetro.com
- Drill a 28mm-diameter round hole in the mounting bracket, ensuring it is aligned with the target.
- Install the SPM sensor and maintain a 5～10mm sensing distance.
- Rotate the drive shaft to confirm the sensor will not touch the target during operation (see Figure 5).
Figure 5: Installation of SPM Sensor on the Drive Shaft of Mud Pump
Components in Figure 5: What’s app +8615972752793 Luben@youlongpetro.comMounting Bracket, Sensor, 5-10mm Gap, Target, To the Shaft, Signal Connector
Cable Connection
Connect one end of the SPM cable to the sensor and the other end to the socket on the round SPM gauge.
1.4.2 Installation of SPM Gauge
- Mount the SPM gauge in a position on the driller’s box or console that is easily visible to the driller.
- Properly connect the power cable and SPM cable to the gauge.
Installation Dimensions: The gauge has dimensions of 163mm×145mm, with 4×Φ5.5EQS mounting holes (see Figure 6).
Figure 6: Installation Diagram of SPM Gauge
Components in Figure 6: Power Cable, SPM Cable, SZJ-B9 Type Pump Rate Gauge (Marked “PUMP RATE” and “Strokes/Min (SPM)”)
1.4.3 Adjustment and Operation of SPM Gauge
Setting the SPM Multiplier Factor
If there is a transmission ratio between the sensor installation position and the pump piston, What’s app +8615972752793 Luben@youlongpetro.comset the SPM multiplier factor using the following method:
- Turn off the power and remove the SPM gauge cover. The circular circuit board inside is the signal processing and display board, which is equipped with an 8-bit DIP switch (marked “Calibration Factor A” on the board) using binary coding.
- The multiplier factor range is 0.00～55. The setting method is as follows:
Multiply the desired factor by 100 to convert it to an integer.
- Convert the integer to a binary value What’s app +8615972752793Luben@youlongpetro.com(represented as hexadecimal 64H for simplicity).
- Set the DIP switch according to the binary value (ON for 1, OFF for 0).
- Examples:
Desired factor: 1.00 → 1.00×100=100 → Binary (64H) → DIP switch setting: OFF, ON, ON, OFF, OFF, ON, OFF, OFF (corresponding to Mark 1-8).What’s app +8615972752793 Luben@youlongpetro.com
- Desired factor: 0.301 → 0.301×100≈30 → Binary (1EH) → DIP switch setting: OFF, OFF, OFF, ON, ON, ON, ON, OFF (corresponding to Mark 1-8).
Gauge State Switching and Factor Checking
There is a button switch on the circuit board with the following functions:
- Button pressed down: The instrument enters the working state for SPM measurement and display.
- Button released (up): The LCD screen displays the multiplier factor in the format “Px.x.x” (e.g., factor 1.00 is displayed as “P1.0.0”), allowing verification of the setting.
Calibration of SPM Gauge
- Release the button switch; the LCD displays the current multiplier factor. What’s app +8615972752793Luben@youlongpetro.comSet Factor A to 1.00 initially.
- Press the button to switch to measuring state, start the pump, and manually count the pump strokes per minute (record as X).
- Record the SPM value displayed on the gauge (record as Y).
Calculate the correct multiplier factor using the formula: Factor A = X/Y, then reset the DIP switch accordingly.What’s app +8615972752793 Luben@youlongpetro.com
- After setting, reinstall the gauge cover in reverse order of removal. Tighten the six screws symmetrically and evenly with moderate force to avoid glass breakage.
- Maintenance and Troubleshooting Methods
2.1 Maintenance
- Before moving the system, turn off the power first, disconnect all sensor cables, and install the protective caps on the connectors.
Arrange cables to avoid interfering with normal operations. What’s app +8615972752793 Luben@youlongpetro.com
- Place them in safe and secure locations to prevent collision or damage.
- Regularly check the distance between the sensor’s induction surface and the target. Vibration may cause loosening, which could damage the induction surface.
Regularly inspect connectors for looseness and cables for breakage. What’s app +8615972752793 Luben@youlongpetro.com
- Replace damaged cables promptly.
Prevent metal scraps or oil containing metal scraps from contaminating the induction surface, What’s app +8615972752793 Luben@youlongpetro.com
- as this may cause magnetic short circuits and sensor malfunction.
- Avoid prolonged direct sunlight exposure to the sensor to improve operational reliability.
- The normal voltage between the sensor signal terminal and ground is 3.75V. If the voltage deviates significantly, check the gauge display for normal operation.
2.2 Troubleshooting
Before troubleshooting SPM parameter issues, confirm that the signal processing and display board is functioning normally. What’s app +8615972752793 Luben@youlongpetro.com
When the SPM gauge is powered on, the indicator light on the signal processing and display board should flash regularly; if not, the circuit board may be faulty.
Inaccurate SPM display or no display typically stems from power supply issues, sensor faults, signal processing and display board malfunctions, or incorrect calibration factor settings (assuming the data acquisition board and two-way communication are normal).What’s app +8615972752793 Luben@youlongpetro.com
Below is the troubleshooting method for common problems:
Problem: SPM Display Values Fluctuate Significantly
- Check the cables: Ensure the shielded layer of the cable is grounded at one end (connected to Pin 4 of the aviation plug) and that other pins are securely soldered.
Inspect the sensor junction box wiring: Ensure all connections are secure and tight. What’s app +8615972752793 Luben@youlongpetro.com
- Verify the distance between the sensor probe and target is within the 5～10mm range (not too far or too close).
- Check the gauge wiring: Ensure all connections to the gauge are secure and reliable.
- If the above steps do not resolve the issue, replace the signal processing and display board.
2.3 Attentions
Do not disassemble the instrument while it is powered on to avoid electric shock or component damage.Contact info What’s app +8615972752793 Luben@youlongpetro.com
- Do not wash the instrument with water, as this may cause short circuits or internal component corrosion.
- Do not squeeze or rub the cables; replace any broken cables immediately.
- The SPM transmission ratio is preset during initial on-site installation. If the system is moved, re-calibrate it using the relevant methods specified in this manual.
- Do not route shielded cables together with power cables in conduits or cable trays. Keep all shielded cables away from high-power equipment to avoid electromagnetic interference.
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Contact info
What’s app +8615972752793
Luben@youlongpetro.com
You Long Petroleum Machinery Spares ltd.(YOU LONG PETRO) engages in the export of the petroleum equipment and materials and provides materials and equipment for CNPC and SINOPEC’s overseas projects. Established in 2003,YOU LONG PETRO has started the manufacturing and supplying of petroleum materials and equipment since 2003.YOU LONG PETRO has provided its products and services to 36 countries and regions across the globe.YOU LONG PETRO’s export performance has come out top in central enterprises in successive years and it has been acknowledged as China’s largest supplier of petroleum and petrochemical materials,which is based on design,production,sale and technical service.Our products are completely interchangeable with the following enterprises.
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The SZJ-BS SPM (Strokes Per Minute) Unit, made by Hubei Jianghan Petroleum Instrument & Meter Co., Ltd., accurately measures mud pump speed (0–300 min⁻¹, error ≤±1.5% FS) for drilling operations. Comprising a non-contact SPM sensor, digital gauge, and oil-resistant cable, What’s app +8615972752793 Luben@youlongpetro.comit works by sensing metal targets to generate pulses, processed into SPM values for display. Powered by 85–245 VAC (-30℃ to 70℃ working temp), it installs on pump crossheads or drive shafts (5–10mm sensor-target gap). Regular checks on wiring and gap ensure reliability; calibration uses a DIP switch for accuracy.
