Valve Position Transmitter

BSW-60 Valve Position Transmitter

Category: Valve Position Transmitter

Product Overview

The BSW-60 valve position transmitter converts the opening position of valves and other equipment into a 4–20 mA DC current signal for use by other monitoring devices. Manufactured with imported components, the product features a simple and reliable design, high conversion accuracy, and a long service life.

Important Notes

Note	For the safety of installation personnel, the product, and the system, please follow the safety precautions in this manual when installing or commissioning this product.
	Improper modification or repair of this product may result in damage. If you need to repair or modify this product, please contact the manufacturer.
	This product is a control valve accessory; when operating it, please also follow the usage precautions for the corresponding control valve.

● Please handle with care during transportation, installation, and use. Excessive vibration and impact may damage the product.

● Do not use the product beyond the limits specified in its technical specifications.

● Do not store the product in environments with high temperatures or high humidity for extended periods. When in use, keep the housing securely closed to prevent rainwater from entering the product.

Warranty Period

The product warranty period is as specified on the purchase order.

Specifications and Performance

Technical Specifications

Project		BSW-60L	BSW-60R
Feedback Signal Voltage		DC 24V ±15 %
Feedback Signal		4–20 mA DC (two-wire)
Impedance		Max 300 Ω
Power Connector Dimensions		PF1/2 (G1/2)
Protection Rating		IP66
Explosion-Proof Rating and Certificate Number		NEPSI: ExdIIBT6 Gb
Itinerary		16–100 mm	20–90°
Environment Temperature	Operating Temperature	Standard Type: -20 to 70°C (below -20°C) (No display)
	Explosion-proof temperature	-20 to 60°C
Display Accuracy		0.1%
Material		Die-cast aluminum
Weight		0.84 kg

Installation and Commissioning

Mechanical Connection

I. Installing the Feedback Rod

1. Slide the feedback rod onto the shaft at the bottom of the transmitter, paying attention to the direction of the shaft.

2. Use a 10mm open-end wrench to tighten the lock.

II. Installation on a linear actuator

Attach the universal mounting plate to the transmitter.

1. Use two M6 hex socket screws to secure mounting plates 1 and 2 together. Once mounted on the actuator, adjust the height as needed before tightening the screws.

2. Secure the mounting plate to the transmitter body using two M8 screws, but do not tighten the screws yet.

Installed on a linear actuator

Select screws of the appropriate size based on the mounting hole dimensions on the actuator to install the transmitter onto the actuator. Once the vertical alignment has been adjusted, tighten the mounting screws.

III. Mounting the Transmitter on the Actuator

1. Fully open the actuator and observe the swing angle of the transmitter’s feedback lever. Adjust the swing angle by changing the position of the transmitter relative to mounting plate 1 so that the swing angle falls within the range of 20–70°. (The swing angle increases as the transmitter moves closer to the actuator.)

2. Adjust the actuator opening to the 50% position, and adjust the vertical position of mounting plate 2 so that the feedback plate is level.

3. Tighten the mounting screws to securely attach the mounting plate to the actuator.

4. Move the transmitter horizontally so that the notches on the feedback rod align with the markings on the feedback plate.

5. Tighten the mounting screws between Mounting Plate 1 and the transmitter to complete the installation.

IV. Installation on an angular-travel actuator

1. Secure mounting plate 2 to the actuator with two M5 screws, and tighten the screws.

2. Secure the angular travel stop rod to the actuator and adjust it to the proper height.

3. Secure the transmitter, with the feedback rod attached, to the quarter-turn mounting plate using two M8 screws, and insert the feedback rod into the center slot of the feedback plate.

4. Carefully inspect the shift lever to ensure that it slides reliably within the slot of the feedback rod without contacting the bottom of the transmitter or the actuator. If the transmitter feedback plate’s swing angle exceeds 90°, loosen the bolts connecting the transmitter to mounting plate 1 to move the transmitter farther away from the center of the actuator; if the swing angle is too small, do the opposite.

5. The height of the actuator shaft protrusion varies; this can be adjusted by changing the distance between mounting plates 1 and 2 or the height of the stop bar.

6. Tighten all mounting screws.

Electrical Connections

Important Notes

Note	The transmitter's rated operating voltage is 24 V, and the maximum operating voltage is 26 V. Prolonged operation at voltages exceeding the rated voltage may cause the module to trigger overload protection or experience a short circuit.

Feedback Signal Connections

The terminals on the transmitter circuit board are not polarized; connect the two wires from the feedback loop to the terminals respectively.

Feedback Signal Adjustment

1. First, connect the feedback signal circuit.

2. Next, adjust the feedback signal by following the steps below. (1) If the actuator is an incremental valve (4–8–12–16–20 mA), set the “SW” switch on the right side of the transmitter’s display to “5.”

(2) If the actuator is a on/off valve (4–20 mA), set the “SW” switch on the right side of the transmitter display to “2.”

(3) When the output signal needs to be the opposite of the input signal, and the actuator is an incremental valve (4–8–12–16–20 mA), set the “SW” switch on the right side of the transmitter display to “5.”

(4) When the output signal needs to be the opposite of the input signal, and the actuator is a on/off valve (4–20 mA), set the “SW” switch on the right side of the transmitter’s display to “2.”

Common Troubleshooting

The valve position transmitter is not working, or the LCD screen displays "Error"	Check the feedback rod for looseness
	Check the potentiometer gear for looseness
	Check whether the valve operation is synchronized with the signal
	Is it within the transmitter's allowable range of rotation (travel must be ≥20°)?
	Check whether water has entered the explosion-proof connector, as water ingress can damage the circuit board.
	Open the valve to the 50% position, and use an ohmmeter to measure whether the potentiometer resistance is between 4.5 kΩ and 5.5 kΩ; if it is outside this range, disengage the two gears and rotate the potentiometer gear to adjust the meshing point between the potentiometer gear and the sector gear.