The Interface Solution Experts
5
SPA
Site-Programmable RTD &
Thermocouple Limit Alarm Trips
Specifications
Repeatability: Trip point
repeats within ±0.05% of
input span
Display Accuracy:
±1 digit
Input Accuracy: See
Table 1 on following page
Cold Junction Compen-
sation Accuracy (T/C
inputs only): ±0.25°C
Stability: ±0.1% of
calibrated span, maximum,
over 6 months
Deadband: User set within
selected input range; fully
scaleable and set in user-
selected engineering units
Response Time: 700
milliseconds (Defined as
time from step change on
input to alarm state change
when alarm is set to trip
mid-point)
Alarm Trip Delay: Pro-
grammable from 0-60
seconds
Line Voltage Effect:
±0.005% of span for a 1%
change in line voltage (ac
or dc)
Isolation: 1000Vrms
between case, input, output
(units with -AO or
-AOZ option) and power
terminals (NOTE: High
voltage effect of ±0.001%
of output span/V possible
with prolonged exposure to
ac voltage above 200Vac)
Power Consumption:
2-3.5W, nominal;
4.3W, maximum
Performance
Performance
(continued)
Ambient
Conditions
(continued)
Adjustments
Weight
Input Failure (Burn-
out) Protection: On
detected input failure, all
relays switch to alarm state
(unless -SF3 option is
specified, then only relay
#3 trips); front panel push
buttons select HI/LO alarms
and upscale or downscale
drive if equipped with
-AO or -AOZ option
Input Impedance: 10M
Ω
for T/C and mV inputs
Input Over-Range Protec-
tion: ±5Vdc;
180% of maximum input
span
WITH ANALOG OUTPUT
Output Accuracy: ±0.03%
of output span (includes the
combined effects of linear-
ity, hysteresis, repeatability,
and adjustment resolution)
Response Time: 400ms
maximum time for output
to go from 10% to 90% for
step change on input
Ripple (up to 120Hz):
Current output, 10mV
peak-to-peak max. when
measured across a 250
Ω
resistor; Voltage output,
15mV peak-to-peak max.
Output Limiting:
117% of span max.;
115% of span typical
Load Effect: ±0.01% of
span from 0 to maximum
load resistance on current
output
Operating Range:
–25°C to +65°C
(–13°F to +149°F)
Storage Range:
–40°C to +80°C
(–40°F to +176°F)
Relative Humidity:
0–95% non-condensing
Ambient Temperature Ef-
fect: ±0.005% of
output span per °C max.;
±15ppm of input signal
Effect of Ambient Tem-
perature on Cold Junction
Compensation (T/C inputs
only): ±0.05% per 50°C
change in ambient tempera-
ture
RFI/EMI Protection:
30V/m - ABC
≤
0.5% error
in reading when tested ac-
cording to SAMA standard
PMC 33.1
Common Mode Rejection:
100dB @ 60Hz
Normal Mode Rejection:
40dB @ 60Hz
Front panel push buttons
control settings for zero,
span, alarm trip points,
high/low alarms, etc.; Easy
access internal settings
select current (source or
sink) or voltage output, and
failsafe or
non-failsafe alarm functions;
Internal jumper and menu
password protect parameter
settings
LCD: 2x4 character, backlit,
alphanumeric readout ac-
curate to the nearest digit.
Range: -9999 to 9999
LED’s: Dual-color TRIP
light (one for each relay)
shows green for non-alarm,
red for alarm; READY light
indicates normal operation,
extinguishes in the event of
any internal failure; Dual-col-
or INPUT light shows green
for input with rated range,
red for over range and sen-
sor/wire failure
456 to 513 g
(16.1 to 18.1 oz)
Ambient
Conditions
Indicators
Performance
with Analog
Output (-AO
Option)
Specifications and information subject to change without notice.
