FEATURED PRODUCTS
Proline Heating and Cooling Thermostats

Proline Heating and Cooling Thermostats
For more than ten successful years now, the LAUDA Proline name has stood for uncompromisingly reliable thermostating, intuitive operation and high flexibility in the research, application technology and production areas.
On this occasion, we present to you the frequently tried-and-tested heating and cooling thermostats for ranges of -90 to 300 ° at the absolute height of its game: as the Proline Edition X.
LAUDA Proline thermostats are our solution for high performance and reliable temperature regulation. With their broad temperature range they fulfill high requirements. LAUDA Proline thermostats are available in two versions: in the basic version with the Master control head, and as a Command version with a removable control unit for enhanced ease of operation.
Master version devices can be retrofitted with the Command remote control, which are simply connected to the control head. The thermostat automatically recognises and controls all newly installed moduls.
View more Proline Edition X Videos
The Proline advantages | Your benefits | |
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Proline Control Heads
Proline Master control head
The Proline Master devices are designed with high thermostating
accuracy and reliability for all applications from -90 up to 300 °C where operating parameters are not changed
or modified frequently. They have all the basic features and safety functions required for professional thermostating
during continuous use. A modular structure and bus technology have created an instrument capable of extending
its function and performance as the application requires.

- Easy-to-read green LED display
- Convenient setting of set-temperature and Varioflex pump via three operation buttons
- Indicator lights for heating, cooling, external control and alarm
- Resolution of indication 0.01 C, setting resolution selectable 0.1 or 0.01 °C
- Selectable operating temperature range and additional button for overtemperature protection
- External temperature control via Pt 100
- Optical and audible alarm function
- Simple temperature probe calibration
- Integrated mains network safety device
- Start mode control (automatic or manual)
- Two slots for LiBus modules
- LAUDA Wintherm Plus control software via RS 232/485 interface (optional)

Proline Command control head
The Command control heads are the top models of the LAUDA Proline.
The highly-efficient programmer fulfills all the requirements of complex thermostating processes D with real-time
function. It offers the utmost in user-friendliness and optimum functionality, e.g. for an industrial testing
lab. The simple menu-driven operation and the easy editing of test programs allow for quickly changing thermostating
tasks. The Command console is removable and can easily be used as a remote control (with cable). Comprehensive
basic equipment as with the Proline Master range.

Proline Clear-view thermostats
LAUDA Proline clear-view thermostats for the direct observation of the samples: the PVL models come equipped with five layers of insulating glass and are suitable for low temperatures down to -60 °C. This makes them ideal for the use with the fully-automatic LAUDA PVS viscosity measuring system. The two-chamber principle in the measuring area ensures a constant level, irrespective of the loading and the temperature. The connection of a through-flow cooler or Proline RP 890 enables low temperature measurements down to -40 °C/-60 °C.

Proline Bridge thermostats
LAUDA Proline bridge thermostats are available in two versions with different pump models and immersion depths. The PB models have a pressure/suction pump and require a bath depth of 200 mm, while the PBD models have a more powerful pressure pump (D) and thermostat baths with a depth from 320 mm. In addition, both series of models differ in the selected control head: Master or Command (C). Through variably extendable telescopic rods, all models can be attached without problem to baths with a width of 310 mm up to 550 mm.
Proline Clear-view thermostats
Technical features | PV 15/PV 15 C | PV 24/PV 24 C | PV 36/PV 36 C | PVL 15/PVL 15 C | PVL 24/PVL 24 C | |
Working temperature range | °C | 30...230 | 30...230 | 30...230 | 30...100 | 30...100 |
Operating temperature range | °C | 0*...230 | 0*...230 | 0*...230 | -60**...100 | -60**...100 |
Temperature stability | ±K | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 |
Heater power 115 V/208-220 V | kW | 1.8/– | –/3.5 | –/3.5 | 1.8/– | 1.8/– |
Pump pressure max. | bar | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
Pump suction max. | bar | – | – | – | – | – |
Pump flow (pressure) max. | L/min | 25 | 25 | 25 | 25 | 25 |
Pump flow (suction) max. | L/min | – | – | – | – | – |
Bath volume | L | 11…15 | 19…24 | 28…36 | 11…15 | 19…24 |
Bath opening/Bath depth | mm | 230x135/320 | 405x135/320 | 585x135/320 | 230x135/320 | 405x135/320 |
Size of glass panel | mm | 149x230 | 326x230 | 506x230 | 149x230 | 326x230 |
Cat. No. Master 115 V; 60 Hz | - | LCD 4276 | – | – | LCD 4282 | LCD 4284 |
Cat. No. Master 208-220 V; 60 Hz | - | – | LCD 8278 | LCD 8280 | – | – |
Cat. No. Command 115 V; 60 Hz | - | LCD 4277 | – | – | LCD 4283 | LCD 4285 |
Cat. No. Command 208-220 V; 60 Hz | - | – | LCD 8279 | LCD 8281 | – | – |
* Only achievable with LAUDA add-on cooler ** Only achievable with LAUDA Proline RP 890
Proline Bridge thermostats
Technical features | PB/PB C | PBD/PBD C | |
Working temperature range | °C | 30...300 | 30...300 |
Temperature stability | ±K | 0.01 | 0.01 |
Heater power | kW | 1.8 | 1.8 |
Pump pressure max. | bar | 0.7 | 1.1 |
Pump suction max. | bar | 0.4 | – |
Pump flow (pressure) max. | L/min | 25 | 32 |
Pump flow (suction) max. | L/min | 23 | – |
Bath volume up to approx. | L | 80 | 80 |
Bath opening | mm | telescopic rods can be extended for bath widths 310…550 | |
Bath depth min. | mm | 200 | 320 |
Cat. No. Master 115 V; 60 Hz | LCG 4090 | LCG 4092 | |
Cat. No. Command 115 V; 60 Hz | LCG 4091 | LCG 4093 |

Shut down valve/Reverse flow protection
Reverse flow protection when thermostating external
systems, to avoid over-flow
when pump stops, for retrofitting with LiBus. Temperature range -40…140 °C
Cat. No. | Description |
LCZ 9673 | Shut down valve reverse flow protection with LiBus |
Suitable for | All Proline devices |
Solenoid valve
Water-conscious cooling on heating thermostats for cooling water control. Controlled
cooling operation for exothermal reactions or controlled cooling with programmer. Up
to 155 °C bath
temperature.
Cat. No. | Description | Temperature range |
LCZ 9662 | Solenoid valve with LiBus-connector | -10...155 °C |
Suitable for | All heating and clear-view thermostats |
Baskets
For notch bending test
Cat. No. | Suitable for |
LCZ 0658 | RP 870, RP 870 C, RP 890, RP 890 C |
LCZ 0694 | RP 1290, RP 1290 C |
Constant level device
Necessary for the constant liquid level when thermostating open external
baths.
Connection set: for wall thickness of bath vessel between 0 to 30 mm, with opening
for thermometers
4 mm or 1.9 mm Ø and clamping gland HX 077 and HX 078.
Cat. No. | Description | Suitable for |
LCZ 0660 | Level controller, mechanical | P 8 (C), RP 845 (C) RP 855 (C) |
LCZ 0679 | Connection set for external inlet and outlet | LCZ 0660 |
Automatic filling device
For automatic replacement of liquid losses in thermostat bath, for
example by
evaporation. Also from vessels with max. 1 m suction height
Cat. No. | Description |
LCZ 9661 | Automatic filling device with LiBus |
Controlled high-temperature chiller HTC with LiBus
For controlled cooling of thermostats in
the operating temperature range up to 300 °C
without formation of vapors, to be connected to external water
cooling source.
Cat. No. | Description | |
LCZ 9663 | Controlled high-temperature chiller HTC |
Policies
SHIPPING
Shipping is Extra and will be charged separately. Shipping Quotes will be given upon request.
REPORTING DAMAGED ITEMS AND SHORTAGES
All shortages, defects and deficiencies must be reported within 7 days of receiving the shipment. Merlan Scientific cannot assume responsibility for shortages reported after this period.
On receiving goods, check your packing slip and the package contents carefully. Please report any damaged items immediately and keep all shipping materials for inspection. If you have any questions please call 1-800-387-2474 or write us at info@merlan.ca.
RETURNING GOODS
Before returning any item to Merlan Scientific, please call for a Return Authorization Number. Shipments received without authorization may be refused.
WARRANTY POLICY
Merlan Scientific warrants that each product will be free of defects in materials and workmanship for a period set forth in its published user manuals for its system products and for a period of one (1) year for its component products. The warranty commences on the date the product is shipped by Merlan Scientific. Merlan Scientifics’ sole liability and responsibility under this warranty is to repair or replace any defective product, which is returned to it by the buyer, and which Merlan Scientific determines qualifies for repair or replacement under the terms of the applicable warranty. The product returned to Merlan Scientific for warranty service will be shipped to Merlan Scientific at the buyers expense and will be returned to buyer at Merlan Scientifics’ expense. In no event shall Merlan Scientific be responsible under its warranty for any defect, which is caused by negligence, misuse or mistreatment of a product, or for any unit, which has been altered or modified in any way. The warranty of repaired and replacement products shall terminate with the original warranty of the product.
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