6
The Interface Solution Experts
SPA
2
Programmable Current/Voltage
Limit Alarm Trips
Table 1.
Long-Term Stability
Input-to-Output
(Years)
Input-to-Relay
(Years)
Stability
(% of maximum
span)
Current Inputs
Voltage Inputs
1
0.081
0.093
3
0.14
0.16
5
0.18
0.21
1
0.047
0.066
3
0.81
0.114
5
0.105
0.147
Specifications
Alarm Trip Repeatability:
Current inputs, ±2
microamps (0.01% of
20mA span); Voltage
inputs, ±1mV (0.01% of
max. span)
Display Accuracy:
±1
digit; when scaling the
display (or in Custom
Mode), high input-to-
display span ratios
decrease display accuracy
Input Accuracy:
Current inputs, ±2
microamps (0.01% of
20mA span); Voltage
inputs, ±1mV (0.01% of
max. span)
Stability:
Refer to
Table 1
Dead Band:
11.5V or
50mA, maximum in Linear
Mode; equivalent of
maximum input range in
user-set engineering units
in Scaling/Custom Mode
Response Time:
256msec maximum
(Defined as the time from
step change on input to
alarm state change when
alarm is set to trip at
mid-point)
Alarm Trip Delay:
Programmable from
0-120 seconds
Line Voltage Effect:
±0.002% of span for a
1% change in line voltage
(AC or DC)
Isolation:
1000Vrms
between case, input,
output (units with -AO
option) and power,
continuous. Will withstand
a 1200Vac dielectric
strength test for one
minute (with no
breakdown)
WITH -RF OPTION:
500Vrms between case,
input, output and power
Power Supply:
24DC range, 18-30Vdc;
UAC range, 90-260Vac;
110DC range, 75-150Vdc
Performance
Performance
(continued)
Ambient
Conditions
(continued)
Adjustments
Weight
Power Consumption:
3.5W max. (24DC supply);
4W max. (UAC supply);
6W max. (110DC supply)
Input Impedance:
Current inputs, 20ohms;
Voltage inputs, 1Mohm
Input Over-Range
Protection:
Voltage
inputs, ±30Vdc of max.
input span; Current inputs,
±100mA of max. input
span
WITH ANALOG OUTPUT
Output Accuracy:
Current, ±0.01% of max.
span (±2 microamps);
Voltage, ±0.01% of max.
span (±1mV)
Response Time:
256msec maximum
(128msec typical) for the
output to change from
10% to 90% of its scale
for an input step change of
0 to 100%
Ripple (up to 120Hz):
Current output, 10mVp-p
when measured across a
250ohm resistor; Voltage
output, 50mVp-p max.
Output Limiting:
Current outputs,
Voltage output, -0.5-11V
Load Effect (current
outputs):
±0.01% of
span from 0 to maximum
load resistance on current
output
Operating Range:
-40°C to +85°C
(-40°F to +185°F)
Relay Range:
-25°C to +70°C
(-13°F to +104°F)
Storage Range:
-40°C to +85°C
(-40°F to +185°F)
Ambient Temperature
Effect:
Current, 2
microamps/°C; Voltage,
1mV/°C; Output, ±0.009%
of max. span/°C
Relative Humidity:
0-95% non-condensing
RFI/EMI Protection:
80-1000MHz, 1kHz AM,
when tested to IEC61326
with 0.5% of span or less
error
WITH -RF OPTION:
20V/m@80-1000MHz,
1kHz AM, when tested to
IEC61326 with 0.5% of
span or less error
Noise Rejection:
Common Mode,
100dB@50/60Hz
Normal Mode,
Current Input, 70dB
typical@50mAp-p@
50/60Hz; Voltage Input,
70dB typical@1Vp-p@
50/60Hz
Front panel pushbuttons
control settings for zero,
span, alarm trip points,
high/low alarms, etc.;
Internal jumper and menu
password protect
parameter settings
LCD:
2x5 14-segment
characters, backlit,
alphanumeric readout
accurate to the nearest
digit.
Range:
-99999 to 99999;
Decimal point can be
user-set
LED Type:
INPUT LED:
Dual color LED indicates
input failure
READY LED: Green LED
indicates unit is operating
properly
ALARM 1, 2, 3 and 4 LED:
Dual color LED per relay
indicates alarm status
544 g to 601 g
(19.2 oz to 21.2 oz)
Ambient
Conditions
Indicators
Performance
with Analog
Output (-AO
Option)
Specifications and information subject to change without notice.
0-20mA 0, 23.6mA
4-20mA 3.6, 23.6mA
X-20mA (90% of X), 23.6mA
Output
Failure Limits
