V-sensor Pressure – Volume Alarm Transmitter

The V-Sensors are high precision differential low air pressure and volume transmitters, PID controllers and have one volt free change over alarm relay and a buzzer on board. They are for use in laboratory, clean room installations containment facilities and commercial and industrial ventilation systems.They have overload protection and auto-zero.

The Transmitters have a linear output to pressure or air volume. They work with all CMR duct mounted Veloprobes, Flowprobes, Flowgrids and Venturis. One red and one green led can indicate high or low alarm on the keypad front panel. Signal outputs of 0..10V and 4..20mA as well as modbus rtu is fitted for connection to the BMS, SCADA or PLC’s. There is an additional modbus rtu connection to operate a variety of remote alarm display panels.

Power supplies 24Vdc, 24Vac, 110Vac and 230Vac are available. CE conformity certificates as well as calibration certificates traceable to International Standards (UKAS) are supplied. as standard. All commissioning configurations can be done via the standard operator’s keyboard.

Ultra low pressure and volume measurement
Traceable Calibration Certificate is included
High accuracy and repeatability
Linear pressure or air volume output
Both measurement and PID control output
Two modbus for monitoring and remote display
One alarm relay, buzzer and LED indicators
Auto Zero and overload protection is standard
Operator keyboard display for all functions
Two Modbus rtu, 0..10V and 4..20mA outputs
IP65 enclosure with easy mount wall bracket
24 month warranty
30 Years field application experience

V-Sensor
Measurement Range	Any Range from 0-25Pa or -/+25Pa up to 0-7500Pa or -/+7500Pa
Overload Capacity	Ranges 25Pa – 150Pa up to max 1200Pa if over pressure protection is off. Ranges from 200Pa – 7500Pa up to max 10 times of range if over pressure protection is off.
Media	Non corrosive gases such as Air, N2, O2, Co2, N2O and inert gases
Diaphragm Unit	Beryllium Copper suitable for high concentration of Formaldehyde – Stainless Steel on request.
AC Power Supplies Transformer Isolated	24 Vac 50/60Hz 198mA. Internal Fuse 300mA Auto-Reset 110Vac 50/60Hz 40mA. Fuse 315mA Wickmann. 230Vac 50/60Hz 20mA. Fuse 315mA Wickmann
DC Power Supplies	24 Vdc (19 to 31Vdc) smoothed 118mA Internal Fuse 300mA Auto-Reset.
Voltage Output Signal	0-10V (0 to100% of Range) RL = 5kOhm min.Other output signals (e.g. 2-10V) or PID loop control is programmable via the keyboard.
Current Output Signal Relay Output 1A 24Vdc	4-20mA (0 to100% of Range) RL = 500 Ohm max (0-20mA) or PID control is programmable via keyboardOne Alarm changer over volt free contact is user programmable
2 x Modbus rtu Connection	2 x Output Signal, Alarm Status, Alarm Thresholds and Alarm Timers are all readable as Modbus rtuCommands. Modbus register assignments to read and write are available in user manual.
Hysteresis/Repeatability	0.1% Typical of Full Scale.
Linearity (Accuracy)	+/- 0.25% of Full scale = > 100 Pa and 0.25Pa < 100Pa.
Zero Drift	0.05%K (+10°C to +50°C) – Automatically corrected to 0.0 if Auto-Zero function is enabled
Operating Temperature	-10°C to +70°C.
Mounting Position	Vertical.
Weight	0.6 kg in ABS Housing.
Electrical Connections	ABS Housing: 1 x M20 Gland and 1 x M12 Gland and internal removable Screw Terminals.

Overview

V-sensor Pressure – Volume Alarm Transmitter

Ultra low pressure and volume measurement
Traceable Calibration Certificate is included
High accuracy and repeatability
Linear pressure or air volume output
Both measurement and PID control output
Two modbus for monitoring and remote display
One alarm relay, buzzer and LED indicators
Auto Zero and overload protection is standard
Operator keyboard display for all functions
Two Modbus rtu, 0..10V and 4..20mA outputs
IP65 enclosure with easy mount wall bracket
24 month warranty
30 Years field application experience

Technical specification

V-Sensor
Measurement Range	Any Range from 0-25Pa or -/+25Pa up to 0-7500Pa or -/+7500Pa
Overload Capacity	Ranges 25Pa – 150Pa up to max 1200Pa if over pressure protection is off. Ranges from 200Pa – 7500Pa up to max 10 times of range if over pressure protection is off.
Media	Non corrosive gases such as Air, N2, O2, Co2, N2O and inert gases
Diaphragm Unit	Beryllium Copper suitable for high concentration of Formaldehyde – Stainless Steel on request.
AC Power Supplies Transformer Isolated	24 Vac 50/60Hz 198mA. Internal Fuse 300mA Auto-Reset 110Vac 50/60Hz 40mA. Fuse 315mA Wickmann. 230Vac 50/60Hz 20mA. Fuse 315mA Wickmann
DC Power Supplies	24 Vdc (19 to 31Vdc) smoothed 118mA Internal Fuse 300mA Auto-Reset.
Voltage Output Signal	0-10V (0 to100% of Range) RL = 5kOhm min.Other output signals (e.g. 2-10V) or PID loop control is programmable via the keyboard.
Current Output Signal Relay Output 1A 24Vdc	4-20mA (0 to100% of Range) RL = 500 Ohm max (0-20mA) or PID control is programmable via keyboardOne Alarm changer over volt free contact is user programmable
2 x Modbus rtu Connection	2 x Output Signal, Alarm Status, Alarm Thresholds and Alarm Timers are all readable as Modbus rtuCommands. Modbus register assignments to read and write are available in user manual.
Hysteresis/Repeatability	0.1% Typical of Full Scale.
Linearity (Accuracy)	+/- 0.25% of Full scale = > 100 Pa and 0.25Pa < 100Pa.
Zero Drift	0.05%K (+10°C to +50°C) – Automatically corrected to 0.0 if Auto-Zero function is enabled
Operating Temperature	-10°C to +70°C.
Mounting Position	Vertical.
Weight	0.6 kg in ABS Housing.
Electrical Connections	ABS Housing: 1 x M20 Gland and 1 x M12 Gland and internal removable Screw Terminals.

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