Curtis 3140 - Electrical Characteristics and Power Requirements

5 — SPECIFICATIONS
Curtis 3140 Manual – Nov. 2017
pg. 14
5 — SPECIFICATIONS
e specications for the Curtis Model 3140 are presented in Table 4.
ENVIRONMENTAL
Operating Temperature:
–10°C to +85°C (with optional LCD heater: –40°C to +85°C).
Storage Temperature:
–40°C to +85°C.
Humidity:
Soak:
Designed to meet EN 60068-2-78.
Test Cab:
Damp Heat, Steady State, 10 days at 93% RH (±3%), 30°C.
Cyclic:
Designed to meet EN 60068-2-30.
Test Db:
Damp Heat, Cyclic (12hr + 12hr cycle). Test method variant 1. 6 cycles (each
cycle is 24hrs), 90% RH.
Ingress Protection:
Designed to meet EN 60529
Face: IP65; Rear surface: IP54.
Shock:
Applicable to enclosed units only: designed to meet EN 60068-2-27: 3 shocks
in all 3 axes in both directions (18 shocks in total), 500 m/s², 11ms, half sine
wave.
Vibration: The following vibration specications are applicable to enclosed units only:
General:
Designed to meet EN 60068-2-6, Swept Sine Wave method, 5g, 20 cycles in
each plane, 5 to 500 Hz, 1 Octave/min. ; Amplitude = +/– 15mm; Amplitude <
+/– 15mm; Acceleration = 5g.
Random:
Designed to meet EN 60068-2-64. Test Fh: vibration, broad-band random (digital
control) and guidance. Method 1, random excitation, 5hrs in each axis, 10 to 350
Hz.
Resonance:
Designed to meet EN 60068-2-6. Vibration sinusoidal, 5g, 5 mins at resonant
points, 1 Octave/min, Swept Sine Wave 10 to 2000 Hz.
Table 4 Specications
ELECTRICAL
Signal Name Min. Nominal Max.
B+ 18 V 24 – 48 V 60 V
Heater B+ 18 V 24 – 48 V 60 V
Signal
Name
Standard Models Backlit Models
LCD Heater
(mA)
Typical
(mA)
Max.
(mA)
Typical
(mA)
Max.
(mA)
B+ (24V) 14 20 24 30 140
B+ (28V) 14 20 25 31 170
B+ (36V) 14 20 25 31 140
B+ (48V) 15 21 25 32 98
B+ (60V) 15 21 26 33 82