GMC Instruments METRAHIT 27M (M227A) Compact Milliohmmeter, Multimeter, and Temperature Measuring Instrument - DISCONTINUED

Real-Time Clock
Accuracy    ±1 minute per month
Temperature
Influence     50 ppm/K

Reference Conditions
Ambient
temperature         +23 °C±2 K
Relative humidity, 40 ... 60%
Measured quantity
frequency            45 ... 65 Hz
Measured quantity
wave shape         Sinusoidal, deviation between RMS and
                            rectified value < 0.1%
Storage battery voltage 3.6 V ± 0.2 V

Display
LCD panel (65 mm x 30 mm) with display of up to 3 measured
values, unit of measure, type of current and various special
functions.
Display / char. height 7-segment characters
                                Main display: 12 mm
                                Auxiliary displays: 7 mm
Number of places 4¾ places, 30999 steps
Overflow display “OL” appears
Polarity display “–” sign is displayed if plus pole
                        is connected to  l 
LCD Test All display segments available during
              operation of the METRA HIT 27 are
              activated after the instrument is switched on.
Background
illumination    METRA HIT 27I only

Power Supply
Storage batteries 3 ea. 1.2 V/2100 mAh NiMH (AA size)
Service life with 2100 mAh NiMH storage battery set

Additional consumption for:
Interface operation: 0.5 mA
LCD illumination: 25 mA at 3.6 V. If voltage drops below
                            2.7 V, the instrument is switched off automatically.
Storage battery test -||−is displayed automatically if storage battery
voltage drops to below approx. 3.3 V
Storage battery charging with NA HIT 2x (Z218H) mains power battery
charger (2100 mAh storage battery set:
recharging time 20 hours)
or
with external NiMH quick charger Z206D:
recharging time approx. 2 hours

Fuses
Fuse links for all mΩ
measuring ranges FF (UR) 1.6 A/1000 V AC/DC,
                            6.3 mm x 32 mm, 10 kA switching
                            capacity at 1000 V AC /DC and ohmic
                            load
Acoustic Signal For display > 610 V in 600 V range
                         (intermittent tone, 250 ms on/off)

Electrical Safety
Safety class II per IEC/EN 61010-1:2001
                   /VDE 0411-1:2002
Measurement category II
Operating voltage 600 V
Fouling factor 2
Test voltage 3.5 kV~ per IEC/EN 61010-1:2001/
                     VDE 0411-1:2002

Electromagnetic Compatibility (EMC)
Interference emission EN 61326-1:2006 class B
Interference immunity EN 61326-1:2006
                                EN 61326-2-1:2006

Data Interface
With BD232 interface adapter as accessory:
Data transmission Optical via infrared light through the
                              housing
Type RS 232 C, serial, per DIN 19241
Bidirectional baud rate (read and write)
                                 SI232-II: all baud rates
                                 BD232: 9600 baud

Ambient Conditions
Accuracy range 0 °C ... +40 °C
Operating temp. -10 °C ... +50 °C
Storage temperature -25 °C ... +70 °C (w/o storage batteries)
Relative humidity 40% ... 60%,
                            no condensation allowed
Elevation to 2000 m
Deployment Indoors only, except within specified
                     ambient conditions

Mechanical Design
Protection Housing: IP 54, connector jacks: IP 20

Dimensions 84 mm x 195 mm x 35 mm
Weight approx. 420 gr. with storage batteries
           (without GH18 protective rubber cover)