ET2090/- & PC2090/-
www.oxleygroup.com
Features
Electronic Elapsed Time Indicator ET2090/- & PC2090/-
This chapter contains product information for the Electronic Elapsed Time Indicator ET2090/- & PC2090/-.
Features
• Total solid state circuitry.
• Contrast enhanced LED display.
• EEPROM non-volatile memory.
• 10 years data retention.
• Panel sealing.
• RFI shielded window.
Description
The Oxley ET2090/- series of panel mounting, panel sealing Electronic Elapsed Time Indicators (EETI)
and PC2090/- Pulse Counters are designed for installation into equipment requiring utilisation and
maintenance data for warranty validation and preventive maintenance purposes.
Elapsed time is measured to an accuracy of 0.1% and stored with a resolution of 36 seconds. The high
reliability, seven segment, four digit LED display indicates hours or external pulses up to 9999. When
these are exceeded the display will roll over to 0000. Memory redundancy and data encoding techniques
ensure that roll over can occur ten times before EEPROM memory exceeds its specified write cycle
endurance limit. Data retention, in the absence of applied power, is in excess of 10 years.
The circuits are enclosed in an aluminium/brass body which is both display and panel sealed for
environmental protection. The display features a conductive mesh screen which eliminates EMC
emissions. Conductive gaskets ensure effective EMI shielding. Rugged construction ensures survival
during high levels of bump and vibration.
Oxley UK, Email sales@oxley.co.uk
Tel: +44 (0) 1229 582621
Fax: +44 (0) 1229 585090
29
Oxley Inc. USA, Email sales@oxleyinc.com
Tel: (203) 488 1033
Fax: (203) 481 6971
ET2090/- & PC2090/-
.
www.oxleygroup.com
Description
48 mm (1.89") CRS
40 mm (1.57")
4 Holes
Ø
3.26 mm
(0.128")
25 mm (0.984")
12 mm
(0.47")
max
45 mm (1.77") max
0.81 mm
(0.032")
3 mm
(0.118")
33 mm (1.3")
5.5 mm
(0.216") typ
15.4 mm
(0.61")
3.5 mm
(0.138") typ
8 mm (0.315")
7.5 mm (0.295")
35 mm (1.378")
10 mm (0.216")
12 mm (0.472")
Coloured
Bushes
for Pin
Identification
14 mm (0.55")
Marking
Area
RF Gasket
55 mm (2.165")
Variants can facilitate elapsed time RESET and DISPLAY ENABLE/DISABLE control. The display is
designed for optimum readability with a narrow viewing angle to avoid unnecessary operator distraction.
Custom housings can also be supplied.
For ordering information see
page 32.
Oxley UK, Email sales@oxley.co.uk
Tel: +44 (0) 1229 582621
Fax: +44 (0) 1229 585090
30
Oxley Inc. USA, Email sales@oxleyinc.com
Tel: (203) 488 1033
Fax: (203) 481 6971
ET2090/- & PC2090/-
Characteristics
Supply voltage
Supply current
Timing resolution
Display resolution
Capacity
Timing accuracy
Data retention
Operating temperature
Storage temperature
Panel sealing
www.oxleygroup.com
Description
18 V d.c. to 33 V d.c. (DEF STAN 61-5 Part 6 compatible)
25 mA typical, 50 mA max at 33 V d.c.
0.01 hours
1 hour/1 pulse
9999 hours/pulses
better than 0.1%
10 year min at 25°C
-40°C to +70°C
-45°C to +850°C
IP67
Colour Coded Terminations
PIN No
3
1
RED
BLACK
COLOUR
28 V power supply
0 V common
FUNCTION
The following inputs are designed to be driven by open collector outputs:
2
ORANGE, PC2090 only
(count)
Pulse count input:
Low level pulse width - 10 ms min
Pulse frequency - 30 Hz max
Low level input - 0 V to 0.8 V
Internal pull up resistance - 100 kΩ
Display control input. Connect to 0 V to enable display. Leave
disconnected for operation without display indication.
Reset control input. Active low level:
Low level input voltage - 0 V to 0.8 V
Reset low level pulse width - 20 ms min
Low level input - 0 V to 0.8 V
Internal pull up resistance - 100 kΩ
5
GREEN, ET2090/04,
PC2090/04 versions only
(display enable)
YELLOW
/R versions only (reset)
4
Nato Stock Number (NSN)
Electronic Elapsed Time Indicator Type No. ET2090/03 NSN: 6645-99-052-3896.
Oxley UK, Email sales@oxley.co.uk
Tel: +44 (0) 1229 582621
Fax: +44 (0) 1229 585090
31
Oxley Inc. USA, Email sales@oxleyinc.com
Tel: (203) 488 1033
Fax: (203) 481 6971
ET2090/- & PC2090/-
www.oxleygroup.com
Ordering Information
Ordering Information
Type Number
(non-resettable)
ET2090/03
ET2090/04
PC2090/03
PC2090/04
Type Number
(resettable)
ET2090/03/R
ET2090/04/R
PC2090/03/R
PC2090/04/R
EETI
EETI with DISPLAY ENABLE control
PULSE COUNTER, external pulse input
PULSE COUNTER, external pulse input
with DISPLAY enable control
Description
When ordering please specify Type Number and quantity required.
Oxley UK, Email sales@oxley.co.uk
Tel: +44 (0) 1229 582621
Fax: +44 (0) 1229 585090
32
Oxley Inc. USA, Email sales@oxleyinc.com
Tel: (203) 488 1033
Fax: (203) 481 6971
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