Monroe Electronics Electrostatic Fieldmeter - Portable - model 257D - Manual (Page 3)

1
Section 1
SPECIFICATIONS:
Features:
 Battery or line operation
 Two ranges: 2 kV/cm and 20 kV/cm
 Remote probe for easy monitoring of hard-to-reach locations.
 Chopper stabilized, fed-back design for accurate measurements in ionized environments
 Recorder output for unattended monitoring
Specifications:
Ranges: 2 kV/cm and 20 kV/cm
Sensitivity: 1 V/cm and 10 V/cm, respectively
Static accuracy: Better than 5% of reading
Drift: <30 V/cm/hour, non-cumulative after 30 minute stabilization, referred to
input
Noise: <10 V/cm rms, 0 – 200Hz, referred to input
Response speed: 250 ms 10% to 90% (typical)
Analog output: 1/10,000 th of input, <10  impedance
Battery: Built-in, re-chargeable, gel-type, 12 V, 1.2 AH, >8 hours with backlight on
– charging system on-board, <6 hours re-charging time
DC power: Power adapter supplied:
Input: 100 – 240 VAC/ 47 to 63 Hz/400mA
Output: 18 VDC/840mA
Dimensions: 10½”D x 6 3 /
8
”W x 2 5 /
8
”H
(26.7 x 16.2 x 6.7 cm)
Weight: 2 lbs., 6 oz. (1.1kg)
Instrument operating environment:
25ºC, ±10ºC, 0-85% RH non-condensing
Probe: 1036F-5, 1¾”D x 1¼”H (4.4 x 3.2 cm), 8 oz. (0.2kg)
with 10 ft. (3m) cable – optional extension cable up to 1000 ft. (300m) permitted
Probe operating environment: 30ºC to 100ºC, 0-85% RH non-condensing
Industry approvals:
Probe approved by Factory Mutual Research Corporation as intrinsically safe for
use in Class I, Division 1, Groups C and D hazardous locations when used with
approved IS barriers
CE approvals pending
Accessories included: Alligator clip with boot
Banana patchcord
AC power supply
Manual