Technical specifications

 Supply voltage

 GRLM–70N(T)–_ _

 GRLM–70Xi(T)–_ _ 

 GRLM–70Xt(T)–_ _

 18 ... 36 V DC

 18 ... 30 V DC 

 18 ... 33 V DC

 Output type

 GRLM–70_–_ _-_-I

 GRLM–70_–_ _-_-M

 4 ... 20 mA with HART® 

 RS-485 / Modbus RTU

 Current consumption

 GRLM–70_–_ _-_-I 

 GRLM–70_–_ _-_-M

 4 ... 20 mA / 

 max. 22 mA

 type 10 mA /

 max. 30 mA

 Basic measurement accuracy (for reference reflecting surface)

 ± 2 mm

 Error of current output 2)

 max. 80 μA

 Resolution

 0,1 mm

 Maximal length of measuring electrode

 GRLM–70_–10, 13

 GRLM–70_–11 (12) 

 GRLM–70_–20

 GRLM–70_–30 (33,34,35)

 GRLM–70_–32

 8 m

 2 m

 3 m

 40 m

 15 m

 Dead zone 3)

 see instruction manual

 Adjustable measuring range (SPAN)

 min. 200 mm

 Electrical parameters for variants Xi (XiT) – max. internal values

 Ui =30 V DC; Ii =132 mA;

 Pi =0,99W; Ci =370 nF;

 Li =0,9 mH

 Measurement sensitivity (8 degrees)

 low (1) - medium (3)

 - high (5) - user (1 - 8)

 Failure indication (echo loss) adjustable in modes

 3,75 mA, 4 mA,

 20 mA, 22 mA, 

 LAST4)

 Damping

 1 ... 99 s

 Rise time

 approx. 60 s

 Leakage resistance electrode - housing

 10 kΩ

 Coupling capacity (housing - power) / dielectric strength

 5 nF/500 V AC

 Maximal resistance of current output load Rmax for voltage - 24V DC / 22V DC / 20V DC

 270 Ω/180 Ω/90 Ω 5)

 Maximum tensile strength of the rope electrode

 1400 kg 6)

 Ambient temperature range 7)

 -30 ... +70 °C

 Process temperature range 7)

 -40 ... +200 °C

 Media temperature range 7)

 -40 ... +300 °C

 Process pressure (for temperature +85 °C)

 GRLM-70N-10 (00, 20, 30, 33, 34, 35, 36, 37)

 GRLM-70N-11 (12, 13)

 GRLM-70N-32

 0 ... 100 bar

 0 ... 20 bar

 0 ... 5 bar

 Protection class

 IP67