GMH-3210 hand held thermometer

GMH-3250 Thermocouple Datalogging Thermometer

Our GMH-3250 Hand Held Thermometer for thermocouples is a development of the GMH-3230 dual input thermometer. It retains all of the features of the GMH-3230 such as dual selectable thermocouple and five thermocouple types but the addition of a fully featured data logger with up to 9999 memory spaces.

When compared with other instruments, the GMH-3250 out performs the competition by offering much better accuracy. You can also be assured of reliable operation from this German made instrument.


Two integrated data logger functions
Dual input for two independent sensors
5 thermocouple types can be used
Measuring range of –200 to +1768°C (dependent on thermocouple)
Differential measurement between Probe 1 and Probe 2
Min./ Max. and Hold memory functions
Range of hand held sensors available


Thermocouple Types: J, K, N, S, T (acc. to DIN EN 60584)
Measuring range: Type K: (NiCr-Ni) -65,0 … +300,0°C or -220 … +1372°C Type N: (NiCrSi-NiSi) -100,0 … +380,0°C or -200 … +1300°C Type S: (Pt10Rh-Pt) -50 … +1768°C
Resolution: : 0,1°C or 1°C (0,1°F or 1°F)
Accuracy: (at nominal temperature = 25°C): Type K: -65,0 … +300,0°C: ±0,03% rdg. ±0,05%FS -220 … +1372°C: ±0,08% rdg. ±0,1%FS Type N: -100,0 … +380,0°C: ±0,03% rdg. ±0,05%FS -200 … +1300°C: ±0,08% rdg. ±0,1%FS (T≥-100°C) ±1°C ±0,1%FS (T<-100°C) Type S: -50 … +1768°C: ±0,1% rdg. ±0,1%FS (T≥200°C) ±1°C ±0.1%FS (T<200°C)
Probe: 2 jacks for miniature flat-pin plug.
Display: 2 four digit LCDs (12.4mm and/or 7mm high) for temperature, min./max. values, hold function, etc. as well as additional functional arrows.
Logger functions: -manually: 99 data sets (data recall via keyboard or interface) -cycle: 9.999 data sets (data recall via interface) -adjustable cycle time: 1sec. … 1h
Alarm: Audible and visual alarms. User configurable.
Working temperature: -25 to +50 °C
Storage temperature: -25 to +70 °C
Power supply: 9V battery, type PP3 (included) plus additional d.c. connector for external 10.5-12V direct voltage supply.
Battery service life: approx. 1000 operating hours
Dimensions: approx. 142 x 71 x 26mm (H x W x D). Impact resistant ABS plastic case, front side IP65, integrated pop-up clip for table top or suspended use.
Weight: approx. 155 g (incl. battery)