Flow Control

UKQ68

Brooks Instrument 0154E Four-Channel Secondary Electronics — Record

About this part

UKQ68 is an auction inventory identifier associated with a Brooks Instrument 0154E four-channel secondary-electronics unit; it is not a verified Brooks model or part number. The 0154E supplies power to compatible flow or pressure devices, displays process values, and provides setpoint, blending, valve-override, local/remote, and RS-232 control functions. Brooks has discontinued the 0152/0154 devices and identifies the 0250 Series as their replacement

Configurations vary. Verify the exact unit before choosing a replacement.

Specifications Documents (4)Photos (0)Listing history

No archived photo available

Key Facts

ManufacturerBrooks Instrument 0154 Series

Part numberUKQ68

Product familyConfiguration-specific

Device typeController

Configuration statusConfiguration varies

Application classIndustrial automation and process equipment

CategoryFlow Control

Specifications

Identification

Manufacturer	Brooks Instrument
Observed equipment model	0154E
UKQ68 identifier	Auction inventory identifier; not verified as a Brooks manufacturer part number
Product family	0152/0154 gas and liquid mass-flow secondary electronics

Functional

Channels	Four channels for Model 0154
Connected-device functions	Power, readout, setpoint control, blending, valve override, and local/remote operation for compatible mass-flow or pressure devices
Channel operation	Independent operation or master/slave blending; each channel can be configured as master, slave, or independent

Display

Display	Backlit 4 × 20-character display for Model 0154
Displayed value	Percentage of full scale or a configured process reading

Performance

Readout and control accuracy

0.1% of the configured maximum flow value

Electrical

Operating power input	90–260 Vac, 50/60 Hz, 70 W maximum; the manual's safety-approval scope separately lists 100–240 Vac, 50/60 Hz, 100 W
Device power output	+15 Vdc at 2.9 A and −15 Vdc at 1.4 A maximum, or +24 Vdc at 2.5 A maximum, depending on configuration
Analog signal ranges	0–5 Vdc, 1–5 Vdc, 0–20 mA, or 4–20 mA; current I/O requires the optional I/O board
Signal output loading	Voltage-output load impedance at least 1 kΩ; current-output load impedance at most 750 Ω

Connections

Device channels	Four 15-pin D-sub connectors on Model 0154
Remote setpoint and flow interface	One 25-pin D-sub connector serving up to four channels
External valve override	One 15-pin D-sub connector

Communications

Computer interface

One 9-pin RS-232 D-sub connector

Mechanical

Housing	Anodized-aluminum housing with steel covers; half-width 19-inch rack cassette, rack, panel, or tabletop arrangements
Cassette dimensions	130 × 220 × 230 mm (5.1 × 8.7 × 9.1 in), height × width × depth

Environmental

Ambient operating temperature	0–50 °C (32–122 °F)
Safety-approval environment	Indoor use; altitude to 2,000 m; Pollution Degree 2; Installation Category II; maximum relative humidity 80%

Lifecycle

Manufacturer availability

Discontinued and no longer offered for sale; superseded by the Brooks 0250 Series

Identifier interpretation

The record identifier and the equipment model should remain distinct.

Sonisys record identifierUKQ68

Observed Brooks model0154E

Manufacturer identifier judgmentNo Brooks documentation identifies UKQ68 as a model, ordering code, or service part number.

Replacement and software support

Brooks continues to document software support for the legacy equipment while directing new applications to the 0250 Series.

Legacy product statusModels 0152 and 0154 are no longer offered for sale.

Manufacturer-designated replacement0250 Series; Model 0254 is the four-channel successor.

Enclosure retrofitThe 0250 Series rack-mount kit can adapt a Model 0254 and its power supply to the tabletop enclosure formerly used by Models 0152/0154.

Supported softwareBrooks Smart DDE and Brooks LabVIEW DLL documentation continue to list Models 0152 and 0154.

Channel connector pinout

Family-manual pinout for each 15-pin channel connector. Available supply rails and analog functions depend on the ordered electrical configuration.

Pin	Direction	Function
1	Output	+15 Vdc or +24 Vdc
2	Input	Flow current signal
3	Output	Current setpoint
4	—	Not connected
5	Output	Voltage setpoint
6	—	Setpoint ground
7	Output	Valve override
8	—	Flow-signal ground
9	—	Reserved
10	Input	Flow voltage signal
11	—	Not connected
12	—	Power ground
13	Output	+15 Vdc or +24 Vdc
14	Output	−15 Vdc or not connected
15	—	Not connected

Configuration and compatibility boundary

The 0154 family was configurable, so the nameplate and rear connections govern service compatibility for an individual unit.

Confirm the complete Brooks ordering code before selecting cables, replacement electronics, or a power-supply arrangement.
Verify whether the unit uses the ±15 Vdc or +24 Vdc supply configuration.
Verify voltage versus current I/O; the optional I/O board is required for current signals.
The family manual covers thermal mass-flow devices, pressure controllers and meters, Flomega equipment, Smart-series devices, and Quantim products, but the required cable depends on the connected device and interface.

Installation and service notes

Key requirements from the Brooks family manual.

Do not block the enclosure ventilation openings, including in rack or panel installations.
For the documented EMC installation, use shielded signal cable with at least 80% overall screening, metal-shielded D-sub connectors, 360-degree shield termination at both ends, and an earth-grounded shield.
The rear power entry uses two 5 × 20 mm, 2 A time-delay fuses rated for the applied mains voltage.
Engineering-unit selection changes the displayed unit text; it does not itself perform unit conversion.
In remote mode, voltage I/O permits the flow value to remain visible on the display, while current I/O displays the remote state without the flow value.