ExCos-P ATEX Differential Pressure Transmitter

Description

Highest protection class (ATEX) and IP66 protection, small dimensions, universal functions and technical data guarantee safe operation even under difficult environmental conditions. All sensors are programmable on site without any additional tools.
Pressure transmitter for HVAC systems, e.g. for differential pressure control.
– No additional module in the panel required
– 24 VAC/DC supply
– Outputs 0…10 V, (0)4…20 mA selectable
– Measurement range adjustable
– Actual value indicator (can be switched off)
– All parameters can be adjusted on site without additional tools and measurement devices
All sensors require a 24 VAC/ DC power supply. The electrical wiring must be realized via the integrated Ex-e terminal box acc. to ATEX. The terminals’ type of protection is “Increased safety Ex-e”.

TECHNICAL DATA

Marking:
II 2(1)G Ex e ma [ia Ga] IIC T6…T4 Gb
II 2(1)D Ex tb [ia Da] IIIC T80°C…T130°C Db IP66
Certificate: EU-Type Examination Certificate
Supply voltage / frequency: 24 VAC/DC ± 20% (19,2…28,8 VAC/DC), 50/60 Hz
Current power consumption: 150 mA, ~ 4 W, internal fuse 500 mAT, without bracket, not removable
Galvanic isolation: Supply for analogue in- and outputs min. 1,5 kV, supply for relay output min. 1,5 kV
Electrical connection: Terminals 0,14…2,5 mm² at integrated Ex-e terminal box, stripping lenght 9 mm, torque 0,4…0,5 Nm, equipotential bonding 4 mm²
Display / Control elements: 2 × 16 digits, dot-matrix display, backlit, for configuration, user guidance, parameter and actual value indication. / 3 buttons for configuration
Sensor / Sensor circuit: Piezo messure transmitter / Internal intrinsically safe (IS) circuit
Housing: Aluminium die-cast housing, coated / T6 (T80 °C) at −20…+50 °C
Ambient Temperature – Humidity: -20…+50 °C (storage temperature -35…+70 °C) / 0…95 % rH, non condensing
Pressure connection: P+ / P- sleeves Ø 4…6 mm
Measuring range: ± 100 Pa, ±250 Pa, ±500 Pa, ±1.250 Pa, ±2.500 Pa, ±5.000 Pa, ±7.500 Pa in acc. to type. Minimum measuring range is 20 % of full range (e. g. 20 Pa at ±100 Pa sensor)
Response time of sensor: T90 / 5 s
Accuracy of pressure: < ± 1 % typically, max. ±2 % of end value ± 1 Pa
Zero point setting: Via menu. Short-circuit mechanically both tube connectors P+ / P− for the moment of zero point setting
Non linearity and hysteresis: ± 0,05 % typically, max. 0,25 % of end value
Start delay: 5 s
Stability: Long term stability < 0,2 % / year, temperature influence < 0,02 % / K, supply voltage influence < 0,01 %
Output: Voltage U [V] or current I [mA], selectable on site via menu, protected against short circuit and external voltage up to 24 V and against polarity reversal
Voltage output U: 0…10 VDC adjustable, invertible, burden > 1 kΩ, influence < 0,05 % /100 Ω
Current output I: 0…20 mA adjustable, invertible, burden < 500 Ω, influence < 0,1 % /100 Ω, open circuit voltage < 24 V
Output in alarm mode: Increasing or decreasing output signal, selectable on site, down to 0 VDC / 0 mA or up to 10 VDC/ 20 mA
Scope of delivery: Sensor, 3 self-tapping screws 4,2 × 13 mm, short circuit tube Cos-P-…-A with 1 additional plug for cable Ø 6…8 mm
Parameter at delivery: min./ max. pressure range limits (e.g. ExCos-P-100 = −100…+100 Pa), output 4…20 mA, output in alarm mode decreasing to 0 V/ 0 mA
Dimensions: 180 × 107 × 66 mm
Weight: ~ 950 g
Cable entries: 2×M16, Ex-e plastic cable gland ~ Ø 5…9 mm