Typical RM85 Specifications

TRANSMITTER 
Output voltage
Constant current ranges (p-p)
Maximum contact resistance   
Current variation with contact resistance

RECEIVER
Resistance ranges (manual)     
Data storage resolution     
Operating frequencies 
Receiver input impedance 
Probe mode Auto-Log measurement time
Measurement times with Speed Boost
High Pass Filter
SP correction range (automatic)

45 V
1mA           0.1 mA
50 Kohm    500 Kohm
< 0.1 %


20ohm   200ohm   2000ohm   20,000ohm
0.005     0.05         0.5             5 ohm
72.5, 80, 85, 90, 122.5, 137.5, 140, 142.5 Hz and variable
100 Mohm
120, 200, 300, 450, 600, 800, 1000, 1200 ms
120, 180, 250, 360, 435, 545, 780, 980 ms
13 Hz
+ / - 2 V

TRANSMITTER
Output voltage
Constant current ranges (p-p)
Maximum contact resistance
Current variation with contact resistance

RECEIVER
Resistance ranges (manual)
Data storage resolution
Operating frequencies
Receiver input impedance 
Probe mode Auto-Log measurement time
Measurement times with Speed Boost
Wheel mode Multiplex measurement time
High Pass Filters
SP correction range (automatic)

45 / 100 V
10 mA        5mA          1mA             0.5mA         0.1 mA     0.05mA
10 Kohm    20Kohm    100 Kohm    200Kohm    1 Mohm    2 Mohm (100V)
< 0.1 %


2ohm    20ohm   200ohm   2000ohm   20,000ohm
0.0005  0.005     0.05         0.5             5 ohm
17.5, 20, 22.5, 35, 40, 72.5, 80, 85, 90, 122.5, 137.5, 140, 142.5 Hz, and variable
100 Mohm
120, 200, 300, 450, 600, 800, 1000, 1200 ms
120, 180, 250, 360, 435, 545, 780, 980 ms
30, 40, 50, 60, 70, 80, 90, 110, 130, 150, 170, 200, 230, 330 ms
Off, 0.05, 0.16, 1.6, 8, 13, 15 Hz
+ / - 2 V

GENERAL
Flash Memory capacity

Grid dimensions (length and width independent)
Sample Interval
Communications

Power supply
Battery life (longer with alkaline cells)



Working temperature 
Environmental rating
Weight 
Case dimensions

CHARGER
Output

Charging time
Input voltage to charger

Advanced 5,491,200 readings, Basic 1,372,800 readings (no GPS)
164,000 readings with GPS (= 2 ha at 0.25m SI, a+b multiplexed)
10, 20, 30, 40, 50, 100 m
0.0625, 0.125, 0.25, 0.5, 1 m
USB (2.0) and RS232 at up to 115200 baud (RS232 only for GPS)

4000 mAh Nickel Metal Hydride battery pack or 2 x C Alkaline cells
9 hours at 1mA (50V and 100V output)
8.2 hours at 10 mA (50 V output)
8.2 hours at 5 mA (100 V output)

0 degrees C to + 50 degrees C
IP65 or better
1.35 Kg including optional plug-in multiplexer card
200 x 120 x 90 mm


750 mA at 7.5V constant voltage (constant current fast / trickle charge system inside RM85). Can be used with vehicle adapters.
4 hours, LED Status (NiMH battery pack)
100-240V,47/63 Hz. International pins, UK,Euro,USA,Japan

Back to RESISTANCE METER RM85

Tel: +44 (0) 1274 880568
Fax: +44 (0) 1274 818253
E-mail: info@geoscan-research.co.uk

Geoscan Research
Heather Brae, Chrisharben Park
Clayton, Bradford, West Yorkshire
BD14 6AE, UK

Corp. Member