Technical data
Type	MH3111	MH3151 / MH3156
Pressure Types	Overpressure, negative pressure, differential, absolute pressure, air pressure/barometer, vacuum (depending on sensor)
Measuring Range	Depending on sensor	Depending on sensor
Resolution	Depending on sensor	Depending on sensor
Accuracy	±0.1 % of range (Hysteresis / Linearity)
Output	-	Analog output 0...1 V, free scaleable
Measurement features
Manual Data Memory	-	99 values
Cyclic Data Memory	-	10,000 values (MH3151) 4,000 values (MH3156)
Measuring Interval	-	Adjustable: 1 s...60 min
Sampling Rate	Slow: 4 measurements/s	Slow: 4 measurements/s Peak/Fast: ≥1000 measurements/s
Additional Features	-	Peak value memory, averaging, sea-level correction, differential pressure measurement
General Data
Units (Switchable)	mbar, bar, Pa, kPa, MPa, mmHg, PSI, mH₂O
Sensor Connection	1 x Mini-DIN socket, 6-pole with locking and automatic sensor identification (MH3111, MH3151) 2 x Mini-TC socket, 6-pole with locking and automatic sensor identification (MH3156)
Linearization	Offset and gradient
Power Supply	9V block battery or optional power supply
PC Interface	Galvanically isolated RS232/USB
Display and Housing
Display	2 x 4½ digit LCD
Display Range	-19,999 ... 19,999 digits
Functions	Hold, Auto-Off	Hold, Auto-Off, Min-Max Alarm Signal, Real-time Clock
Housing Material	Shock-resistant ABS plastic, IP65
Dimensions (HxWxT)	142 x 71 x 26 mm
Weight	Approx. 150 g

Technical data
Type	MSD MRE	MSD BRE
Sensor Type	Piezoresistive pressure sensor	Pressure sensor made of stainless steel (wetted parts)
Accuracy	±0.2 % of range (Hysteresis / Linearity)	±0.2 % of range (Hysteresis / Linearity)
Temperature Coefficient	±0.02 % of range / K (TK for offset or gradient)	±0.02 % of range / K (TK for offset or gradient)
Features	Elektronik board with amplifier and memory for sensor data, integrated in sensor housing	Integrated amplifier and memory for sensor data, encapsulated
Degree of Protection	IP67	IP67
General Data
Pressure Connection	2 Nylon connection plugs for hoses 6 x 1 mm (Outer-Ø: 6 mm, Inside-Ø: 4 mm)	Stainless steel connection G½ B (others on request)
Cable Connection	1.2 m PVC connection cable, shielded, with moulded 6-pole Mini-DIN-plug and locking	M16-built-in plug
Housing Material	ABS with hanging lug and nylon connection plug	CrNi-steel or Elgiloy (wetted parts)
Dimensions	68 x 32.5 x 27.5 mm (H x B x T)	Length: 88.5 mm, Ø 27 mm
Weight	Approx. 75 g	Approx. 220 g
Approvals (Optional)	EEx ib IIC T4 - 03ATEX0136X	EEx ib IIC T4 - 03ATEX0136X
Measuring Ranges and Resolution
Type	Measuring Range	Resolution
MSD 2.5 MR	-2...2.5 mbar (rel.)	0.001 mbar
MSD 25 MR	-20...25 mbar (rel.)	0.01 mbar
MSD 350 MR	-200...350 mbar (rel.)	0.1 mbar
MSD 1.3 BA	0...1.3 bar (abs.)	1 mbar
MSD 2 BA	0...2 bar (abs.)	1 mbar
MSD 2 BR	-1...2 bar (rel.)	1 mbar
MSD 7 BA	0...7 bar (abs.)	10 mbar
MSD 10 BR	-1...10 bar (rel.)	10 mbar
MSD 100 MRE	0...100 mbar (rel.)	0.1 mbar
MSD 250 MRE	0...250 mbar (rel.)	0.1 mbar
MSD 400 MRE	0...400 mbar (rel.)	0.1 mbar
MSD 1 BAE	0...1 bar (abs.)	1 mbar
MSD 1 BRE	0...1 bar (rel.)	1 mbar
MSD -1/1.5 BRE	-1...1.5 bar (rel.)	1 mbar
MSD -1/3 BRE	-1...3 bar (rel.)	1 mbar
MSD 2.5 BAE	0...2.5 bar (abs.)	1 mbar
MSD 2.5 BRE	0...2.5 bar (rel.)	1 mbar
MSD 4 BAE	0...4 bar (abs.)	1 mbar
MSD 4 BRE	0...4 bar (rel.)	1 mbar
MSD 6 BAE	0...6 bar (abs.)	1 mbar
MSD 6 BRE	0...6 bar (rel.)	1 mbar
MSD 10 BAE	0...10 bar (abs.)	10 mbar
MSD 10 BRE	0...10 bar (rel.)	10 mbar
MSD 16 BAE	0...16 bar (abs.)	10 mbar
MSD 25 BAE	0...25 bar (abs.)	10 mbar
MSD 25 BRE	0...25 bar (rel.)	10 mbar
MSD 40 BRE	0...40 bar (rel.)	10 mbar
MSD 60 BRE	0...60 bar (rel.)	10 mbar
MSD 100 BRE	0...100 bar (rel.)	0.1 bar
MSD 160 BRE	0...160 bar (rel.)	0.1 bar
MSD 250 BRE	0...250 bar (rel.)	0.1 bar
MSD 400 BRE	0...400 bar (rel.)	0.1 bar
MSD 600 BRE	0...600 bar (rel.)	0.1 bar
MSD 1000 BRE	0...1000 bar (rel.)	1 bar