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pH-/Redox-/T-instrument GMH 3511 / 3531 / 3551

Product No.:: GHM3500-604953

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DESCRIPTION

pH monitoring in aquaculture and aquariums, in drinking water supply and sewage treatment plants. Numerous agricultural applications (e.g. soil studies). Also suitable for quality assurance and control in industrial applications and in food production. Also suitable for medical, pharmaceutical and industrial laboratories.

MODEL VARIANTS

GMH 3511 Device alone (without pH electrode)
GMH 3531 Device alone (without pH electrode)
GMH 3551 Device alone (without pH electrode)

TECHNICAL SPECIFICATIONS

Temperature	-5.0..+150.0 °C or 23.0 ... +302.0 °F
pH	0.00..14.00 pH
Redox (ORP)	1999..+2000 mV Based on hydrogen system: -1792..+2207 mVH (DIN 38404)
rH	0.0..70.0 rH (not GMH 3511)
Accuracy (device)	±1 digit at nominal temperature = 25 °C
Temperature	±0.2 °C (at -5..+100 °C)
pH	±0.01 pH
Redox (ORP)	±0.1 % FS (mV or mVH)
rH	±0.1 rH (not GMH 3511)
Sensor connections
Temperature	2 x 4 mm, banana for Pt 1000, 2-wire
pH, Redox	BNC socket
Display	2 four-digit LCDs, (12.4 mm and 7 mm high)
Working temperature	0..+50 °C
Storage temperature	-20..+70 °C
Interface	Serial interface with direct connection to a PC via galvanically isolated interface converter GRS 3100, GRS 3105 or USB 3100 N (accessory).
Current supply	9 V battery, mains adapter socket for ex- ternal 10.5..12 V DC voltage supply (suit- able mains adapter: GNG 10/3000)
Battery life approx.	300 h
Housing	Made of impact-resistant ABS, foil keypad, clear viewing pane, integrated stand/suspension clip
Dimensions	142 x 71 x 26 mm (H x W x D)
Weight approx.	170 g