TEGAM Models 252, 253, and 254 are used
for evaluating and inspecting components.
These meters provide direct, digital display
of inductance, capacitance, resistance,
conductance and dissipation. They have the
versatility and basic measurement accuracy,
0.25%, to satisfy demanding engineering
and inspection applications, while being
extremely easy to use.
Simply push the button for the desired
function, set the range and connect to the
unknown. True four-terminal connections
are ensured by the standard Kelvin Klip®
test leads. The measurement is displayed
on the large 3.5 digit readout.
The Model 253 has all of the above
characteristics, an auto-ranging feature,
and includes one additional measurement
range for C and G.
The Model 254 has a 120 Hz test
frequency, which makes it ideal for testing
electrolytic capacitors. It has full scale
ranges from 2,000 pF to 20,000 µF with
1 pF resolution on the lowest range.
An optional battery power pack is
available on all versions. This allows these
meters to be used with line power when
available and unplugged when convenient
or necessary.
Available accessories include the
optional Model 1412B Universal Limits
Comparator and the Model 2001 Sorting
Fixture. Other accessories are presented on
the back page of this data sheet.
Digital Impedance
Meters
• Automatic L,R,C,G and D
measurements
• Basic accuracy 0.25%
• Auto-ranging version,253
• Test frequenc y 1 kHz on 252 and 253
• Test frequenc y 120 Hz on 254,ideal for
testing electrolytic capacitors
• Shielded four-terminal connections
to unknown
• Optional rechargeable battery
power pack
• Optional model 1412B Limits
Comparator
Models 252,253,254
IMPEDANCE MEASUREMENT INSTRUMENTS
THE GLOBAL SOURCEFOR PROVENTEST
AND MEASUREMENTTECHNOLOGY.
Prices and specifications subject to change without notice.
Static Charge Protection
Diode and resistor discharge network.
Power Requirements
100 to 125V or 200 to 250V, 50/60Hz, 4W.
Dimensions
Height 10 cm (4 inches).
Width 26 cm (10 inches).
Depth 37 cm (14.6 inches).
Weight
3.2 kg (7 lbs) net.
* Digit count, same range.
** After correction for test lead zero reading
0°C to 15°C and 35°C to 50°C add 0.1
(rated accuracy) °C.
Test Frequency
1kHz (252 & 253); 120 Hz (254).
Optional 100 Hz (254).
Measurement Speed
4 per second; one second required for first
reading after connection to unknown.
Connection to Unknown
Four-terminal, guarded. Kelvin Klips
®
supplied with unit.
Display
3.5 digits with decimal point; blanked for
overload conditions.
External Bias
0 to 50VDC.
Analog Outputs
L, C, R or G, with simultaneous output of
D for L and C.
Accuracy (15˚ C to 35˚ C)
T est Signal
252 Ranges
Range No. 0 1 2 3 4 5 6
L
s
200µH 2mH 20mH 200mH 2H 20H 200H
C
p
200pF 2nF 20nF 200nF 2µF 20µF 200µF
R
s
2Ω 20Ω 200Ω 2kΩ 20kΩ 200kΩ 2000kΩ
G
p
2µS 20µS 200µS 2mS 20mS 200mS 2000mS
D 1.999
253 Ranges
Range No. 0 1 2 3 4 5 6 7
L
s
200µH 2mH 20mH 200mH 2H 20H 200H 200H
C
p
200pF 2nF 20nF 200nF 2µF 20µF 200µF 2000µF
R
s
2Ω 20Ω 200Ω 2kΩ 20kΩ 200kΩ 2000kΩ 2000kΩ
G
p
2µS 20µS 200µS 2mS 20mS 200mS 2000mS 20S
D 1.999
254 Ranges
Range No. 0 1 2 3 4 5 6 7
L
s
2000µH 20mH 200mH 2000mH 20H 200H 2000H 2000H
C
p
2nF 20nF 200nF 2µF 20µF 200µF 2000µF 20mF
R
s
2Ω 20Ω 200Ω 2kΩ 20kΩ 200kΩ 2000kΩ 2000kΩ
G
p
2µS 20µS 200µS 2000µS 20mS 200mS 2000mS 20S
D 1.999
Standard Equipment
Kelvin Klips
®
43072
Instruction Manual
for 252 43158
Instruction Manual
for 253 43761
Instruction Manual
for 254 43762
±(0.25% +
(1 + 0.002Rs*)
counts)**
L
s
±(0.25% + (1 + 0.001Rs*) counts)
±(0.25%+
(1 + 0.002Rs*)
counts)
±(0.25% +
(1 + 0.002Rs*)
counts)
±(0.25% +
(1 + 0.002Gp*)
counts)**
C
p
±(0.25% + (1 + 0.001Gp*) counts)
±(0.25% +
(1 + 0.002Gp*)
counts)
±(0.5% +
(1 + 0.004Gp*)
counts)
±(0.25% +
(1 + 0.002Ls*)
counts)
R
s
±(0.25% + (1 + 0.001Ls*) counts)
±(0.25% +
(1 + 0.002Ls*)
counts)
0.25% +
(1 + 0.002Ls*)
counts)
±(0.25% +
(1 + 0.002Cp*)
counts)
G
p
±(0.25% + (1 + 0.001Cp*) counts)
±(0.25% +
(1 + 0.002Cp*)
counts)
±(0.5% +
(1 + 0.004Cp*)
counts)
±(1% + 0.002) for L or C ≥ 200 counts; ±(2% + 0.010) for L or C 50 to 199 countsD
Voltage Cp,G
p
1.0VRMS 0.1VRMS 0.01VRMS
Current Ls,R
s
100mA 10mA 1mA 100µA 10µA 1µA
±(2% + 0.10)
Models 252,253,254
IMPEDANCE MEASUREMENT INSTRUMENTS
Specifications
Limit Controls
-% % deviation lower limit
+% % deviation upper limit
D dissipation factor upper limit
Ranges
Nominal value 00500 to 19999 (corresponds
to DPM reading of companion unit).
-% -99.9% to 0, -9.99% to 0
+% 0 to 99.9%, 0 to 9.99%
D 0 to 0.999, 0 to 0.0999
Accuracy
Nominal Value ±0.1% of reading
(01999 to 19999)
±0.3% of reading
(00500 to 01999)
% limits ±0.5% of full scale
D limit ±0.5% of full scale
Front Panel Lamp Indications
GO indicates value between
- and + % limits,
and less than D limit.
LO indicates value less
than - limit
HI indicates value greater
than + limit
D HI indicates factor greater
than D limit
Relay Contacts (Rear Panel Connections)
Four pairs of isolated relay contacts
(DPST) close individually in synchronism
with front panel lamp indications.
Relay Contacts Ratings
3 watts dc, 28 volts dc maximum,
100 milliamperes; 1 millisecond switch
closure time.
Gated Relay Closure
Gated model operation may be selected by
means of a rear panel switch. In this condition
Limits Comparator Relay outputs for
Handler operation
• Front panel LED for manual sorting
• Resolution for nominal 4-1/2 digit
• Independent upper and lower limits
• Sort by C and D simultaneously
• Sorts R, L and G
• Operates with 252, 253 or 254
The Model 1412B is a Limits Comparator
used to automatically or manually sort
components. When used with a TEGAM
Model 252, 253, or 254, it provides either a
“GO”, “HI”, or “LOW” indication for R, L,
C, or G. The Model 1412B simultaneously
sorts for D and C, so there is also a “D HI”
indication for this condition.
Using the 1412B speeds sorting and
minimizes component handling. One method
of the acceptance indication is through a rear
panel connector which allows for integration
into a system by connecting the 1412B to
automatic handling equipment.
The other indication method is the front
panel LED’s. There is also a gated mode,
where a comparison is initiated by a control
switch and held for an adjustable time, up to
two seconds, after release of the switch.
Both these features simplify manual use.
Resolution of the nominal value is 4.5
digits and the limits switches have three digit
resolution. The system has two limits ranges,
10% and 100% of full scale, allowing for
range settings of 0 to 9.99% or 0 to 99.9%.
The D limit also has two ranges. The upper
and lower limits are set independently,
which adds to the outstanding flexibility and
accuracy of the system.
the relay contacts remain open when a limit is
reached, unless closure is initiated by a control
switch. Duration of closure, after the control
switch is released, is determined by the
adjustment of a timing control (two seconds
maximum).
Input Signals
C, L, R, G analog; D analog; analog common.
Internal reference voltage used with TEGAM
Model 252, 253, 254 or other instruments,
selected by rear panel switch.
Dimensions
Height 13.5 cm (5.3 inches)
Width 21.6 cm (8.5 inches)
Depth (overall) 33 cm (13 inches)
Weight
3.63 kg (8 lbs) net.
Standard Equipment
Interconnection Cable 42855
Instruction Manual
for 1412B 42428
Options and Accessories
Battery Powered 252 SP2596
Battery Powered 253 SP2598
Battery Powered 254 SP2599
Dust Cover 43374
Sorting Fixture 2001
Cable Set for 2001 43586
LINE VOLTAGE
102 50/60 Mz
100/120
220/240
FUSE SIZE
1/2A
1/4A
J1
UNLATCH
DELAY
EXT
GATE
NORMAL
INTERNAL EXTERNAL
V REF
Calibration & T echnical Services
For warranty and remedial repair, calibration
services and spare parts, or for additional
information on TEGAM sales and service
offices around the world, contact us at
440-466-6100 (ph) or 440-466-6110 (fx).
Models 252,253,254
IMPEDANCE MEASUREMENT INSTRUMENTS
252.991PG
THE GLOBAL SOURCEFOR PROVENTEST
AND MEASUREMENTTECHNOLOGY.
TEN TEGAMWAY • GENEVA,OHIO 44041
440-466-6100 • FAX 440-466-6110
www.tegam.com • e-mail:sales@tegam.com
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