GMH3710 and GMH3750
high accuracy Pt100 indicator
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High accuracy and resolution indicator for Pt100, 4-wire sensors and probes
Accuracy up to ±0.04°C with Resolution up to 0.01°C
Optional USB or RS-232 interface for data logging and/or configuration on a Windows PC
Max and Min hold function
Offset and slope correction
Additional features of the GMH3750:
2 integrated logger functions: manual or time-cycled
Visual and audible Min-Max Alarm
User-defined sensor curve of up to 50 points
Min./Max. Memory: Memorising of max. and min. values.
Hold Function: Freeze the current display values at the push of a button.
Auto-Off-Function: 1...120min (can also be deactivated).
Offset and Slope Input: offset and scale factor can be entered digitally
GMH3570 Additional Features:
Alarm: 3 different alarm settings:
Off: alarm function not activated
On: visual alarm via display, integrated buzzer and interface
No Sound: alarm via display and interface
Min./Max. Alarm: the measuring value is constantly monitored and the alarm triggered if it goes
outside the min./max. limits set.
Real-time clock: clock with date and year
Manual: 99 data sets (data recall via keyboard or interface)
Cycle: 16,200 data sets (data recall via interface)
Adjustable cycle time: 1sec. ... 1h. Logger start and stop via the keyboard or interface.
use read-out and display software (GSOFT3050) available as an option.
-199.99 ... +199.99°C or -200.0 ... + 850.0°C
-199.99 ... +199.99°F or -328.0 ... +1562.0 °F
Resolution: 0.01°C or 0.1°C;
0.01°F or 0.1 °F
Auto-Range: automatically or manually select the measuring range.
Accuracy (±1 digit) (@ 25°C):
≤ ± 0.03°C for -199.99 to +199.99°C range
≤ ± 0.1°C for -200.0 to +850.0°C range
GMH3750 additionally supports a 50-point user defined curve.
Temperature Drift: ≤ 0.002 °C/K
Probe: Pt100, 4-wire, DIN EN 60751. Probe connection via 4-pin miniature DIN-plug
Operating Temperature: -25 to +50°C
Relative Humidity: 0 to +95%RH. (non-condensing)
Storage Temperature: -25 to +70°C
Display: two 4½ digit LCDs (12.4mm or 7mm high), with additional symbols.
Keypad: 6 membrane keys
Output: 3.5 mm stereo jack socket, choice between serial interface or analogue output
Serial Interface: direct connection to RS232 or USB interface of a PC via electrically isolated interface adapter GRS3100/USB3100.
Analogue Output: 0...1V, adjustable (resolution 13bit, accuracy 0.05% at nom. temp.)
Power Supply: 9V-battery (included) as well as additional d.c. connector for external 10.5- 12V direct voltage supply. (suitable power supply: GMH37XX-PSU)
Low Battery Warning: ' bAt '
Power Consumption: approx. 1 mA
Dimensions: 142 x 71 x 26 mm (H x W x D)
Housing: Impact resistant ABS plastic housing, membrane keypad. Front face IP65, integral stand/belt-clip.
Weight: approx. 155 g