Remote Operation - Hameg HM8112-3S Manual

6 1/2 digit precision multimeter

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INTERFACE

Instruments

D-63533 Mainhausen

HM8112-3b

PRECISION MULTIMETER

Made in Germany

Attention!

Voltages exceeding one of the following values are

regarded potentially dangerous or even lethal:

30 V

rms

42.4 V

peak

60 V

Connecting higher voltages than those is only allo-

wed to skilled personnel who are familiar with the

dangers incurred. The relevant safety regulations

are to be strictly observed!

V/SENSE (4mm safety sockets)

Connection of measuring cables for:

–

voltage measurement

–

frequency measurement

–

4 wire resistance measurement (SENSE)

–

continuity test

–

temperature measurement by a thermocouple

–

4 wire temperature measurement by a P–temperature

sensor (SENSE)

The maximum voltage between HI and LO case

(ground) must not exceed 850 V-

The maximum voltage between LO and case

(ground) may not exceed 250 V

A/SOURCE (4mm safety socket)

Connection of measuring cables for:

–

current measurement, max. 1 ampere

–

2 wire resistance measurement

–

4 wire resistance measurement (SOURCE)

–

4 wire temperature measurement by a PT – temperature

sensor (SOURCE)

continuity test up to 10 Ω

–

The maximum current may amount to 1 A

STOP

LOW (4mm safety connectors)

Ground connection for inputs

high-impedance DC-isolated.

Fuse in the current measuring circuit

The shunt is fuse-protected. The fuse (FF) is located in a fuse

holder. The measuring circuit is designed for a maximum al-

lowable measurement current of 1 amper

Serien-Nummer

or 600 V

peak

rms

eff

and

. Both connectors are

R e m o t e O p e r a t i o n

115/230 V ±10% / 50-60 Hz

Watts (max.): 8

Fuse: IEC127 - III

115 V: 0.2 A / 230 V: 0.2 A

5 x 20 mm slow blow,

träge, temporisé, lento

SCANNER

Replacement of the fuse is only allowed, after the

instrument was disconnected from the mains!

A repair of a defective fuse or bypassing the fuse is

very dangerous and absolutely prohibited!

STOP

Replacement of the measuring circuit fuse

The measuring circuit fuse

A replacement of the fuse is only allowed, if no voltage is applied

to the measuring connectors! Therefore all terminals V/SENSE

, ground

and A/SOURCE

cover of the fuse holder has to be turned ccw with a screw driver

having a suitable blade. As the cover can be turned it has to be

pushed by the srew driver into the fuse holder. The cover with

the fuse can then be easily taken out. Replace the defective fuse

by a new fuse of the same type having the same trip current. A

repair of a damaged fuse or the use of other means for bypassing

the fuse is very dangerous and absolutely prohibited! Damages

incurred will void the warranty.

Power receptacle with power switch

Power receptacle for connecting the line cord with according

to DIN49457.

Interface

TheRS-232 interface is on the rear panel of the HM8112-3

(9 pin D-sub socket). The bidirectional interface of HM8112-3 can

receive data (commands) from an external device (PC) or send

data (measurement values and parameters).

The following options are available: USB (HO870), IEEE-488

(HO880)

Voltage selector

Choice of mains voltage (115 V / 230 V).