Simpson Electric 14510-2, Operator'S Manual

9

4.

RESISTANCE

Battery Voltage Battery  Current

Range

Midscale Reading

(Nominal)

(Nominal)

RX1

20 

⍀

1.5 V

75 mA

RX10

200 

⍀

1.5 V

7.5 mA

RX100

2 k 

⍀

1.5 V

0.75 mA

RX1000

20 k 

⍀

1.5 V

0.075  mA

RX10,000

200 k 

⍀

30 V

0.15 mA

Accuracy:   

⫾

2% of FS angular deflection at midscale.

5.

Reference  Conditions:

25°C 

⫾

2°C, 45 to 75% relative humidity

6.

Movement:

Taut-band 100° arc, 50 µA FS

7.

Dial Arcs:

One arc each for 

⍀

 and DC, two arcs for AC

8.

Overload Protection:

Meter movement by varistor, ranges fused
1/2 A, 250 V in series with 2 A, 600 V

9.

Operating Temperature
Ranges (to maintain
rated accuracy):

57°F - 97°F

10. Size:

7" H x 4-1/4" W x 3-1/8" D

11. Weight:

Approximately 2-1/2 lbs. with batteries
(1.133 kg)

12. Rated Circuit-to-

Ground*:

600 V AC/DC maximum

*

Per ANSI C39.5 April 1974: “The maximum voltage, with respect to ground,

which may safely and continuously be applied to the circuits of an instru-
ment.”

1.5

Definition Of Accuracy

The voltage and current accuracy of the Instrument is commonly expressed
as a percent of full scale. This should not be confused with accuracy of read-
ing (indication). For example, 

⫾

2% of full scale on the 10 volt range allows an

error of 

⫾

0.20 V at any point on the dial. This means that at full scale, the

accuracy of reading would be 

⫾

2%, but at half scale it would be 

⫾

4%. There-

fore, it is advantageous to select a range which gives an indication as near as
possible to full scale.

1.6

Safety Consideration

This Operator’s Manual contains special caution and warning symbols to alert
the user to hazardous operating and servicing conditions. These symbols
appear throughout this publication where applicable and are defined on the
inside front cover of this manual under SAFETY SYMBOLS. Adhere to these
instructions in order to ensure the safety of operating and servicing person-
nel and to retain the operating performance of this Instrument.