Polytech Instruments Pvt.Ltd.

Ghodbunder Road, Thane, Maharashtra

• B&W transmission densities
• Calculates positive and negative dot area (TBX1500)
• Soft key menu operation
• 7 inch throat to measure large samples
• Readings are very repeatable with a large degree of accuracy
• USB port standard
• Software calibration
• Optional band pass filter
• Switchable LED table lamps
• Cost effective and affordable quality control system

Damp heat chamber AUTOMATIC for high himidity tests in Constant (CH) and Alternate (AHT, AT) atmosphere to simulates rain and dew by condensing liquid water directly onto the test specimen (high humidity 95% to 100% saturated atmosphere). Suitable to perform test with SO2 (Sulphur Dioxide) addition (Kesternich) and in ambient
atmosphere. Also available without SO2 gas unit option. The test chamber has an internal capacity of 300L and it is built completely in plastic material. Completely automatic execution of cycle. Phase with gas saturated atmosphere: loading of water dosage and SO2 gas every 8 hours at 40C, unloading of chamber. Ambient phase: 16 hours of chamber ventilation with compressed air. The cycle is repeated constantly.
Supplied with 4 bars specimen and 2 panel rack holders. Shipped completely wired and assembled.
In accordance with following norms:
ASTM D1735, ASTM D2247, BS 3900/F9, DIN 50017, DIN 55958, DIN 55991, ISO 11503, ISO 6270, ISO 4541, ISO3231, NFT 30-077, DIN 50017-KFW, DIN 50017, EN ISO 6988 DIN 50018, DIN 53771, NFT 30-055, SFW 2, 0 S, VDA 621-421.


DAMP HEAT CHAMBER Standard VERTICAL model 300L
Damp heat chamber for high humidity tests in constant humidity saturated atmosphere built completely in plastic material. The test chamber has an internal capacity of 300L. Constant (CH) high humidity 9 5% to 100 % saturated atmosphere. Internal temperature up to 55C. Supplied with 4 bars specimen and 2 panel rack holders.
Shipped completely wired and assembled. It is able to perform humidity tests in accordance with the following norms:
AST M D1735, AST M D2247, B S 39 00/F9, DIN 50017, DIN 5595 8, DIN 55991, ISO 11503, ISO 6270 -1, ISO 4541, ISO3231, NFT 30 -077.

DAMP HEAT CHAMBER Standard HORIZONTAL model 600L
Damp heat chamber rectangular design 600 liter volume for high humidity tests in constant humidity saturated atmosphere built completely in plastic material. Constant (CH) high humidity 95% to 100% saturated atmosphere. Internal temperature up to 5 5C. Cover dome in Polypropylene with pneumatic opening system. Supplied with 4 bars specimen and 2 panel rack holders. Shipped completely wired and assembled. It is able to perform humidity tests in accordance with the following norms:
AST M D1735, AST M D2247, B S 39 00/F9, DIN 50017, DIN 5595 8, DIN 55991, ISO 11503, ISO 6270 -1, ISO 4541, ISO3231, NFT 30 -077.

DAMP HEAT CHAMBER Standard HORIZONTAL model 1000L
Damp heat chamber rectangular design 1000 liter volume for high humidity tests in constant humidity saturated atmosphere built completely in plastic material. Constant (CH) high humidity 95% to 100% saturated atmosphere. Internal temperature up to 55C. Cover dome in Polypropylene with pneumatic opening system. Supplied with 6 bars specimen and 4 panel rack holders. Shipped completely wired and assembled. It is able to perform humidity tests in accordance with the following norms:
AST M D1735, A ST M D2247, B S 390 0/F9, DIN 50017, DIN 5595 8, DIN 55991, ISO 11503, ISO 6270 -1, ISO 4541, ISO3231, NFT 30 -077.

• Available functions: Density, Density Difference, Dot Area and Dot Gain.
• Simultaneous display of all filter densities: Shows the major filter value in large characters; the three minor values are shown smaller.
• Plainly worded, self-guiding prompts: Simple directions appear on the display; no complicated operating instructions or training manuals to study.
• Large, high-contrast display area:Easy-to-read display can be viewed from virtually any angle.
• Murray-Davies and Yule-Nielsen dot area calculations: Switch between equations at the touch of a button.
• Convenient one-hand operation: All densitometric functions are quickly and easily accessed through one button.
• Automatic turnoff:Saves battery by shutting off after 90 seconds of non-use.
• Several thousand readings per battery charge: Also runs from the A.C. adapter/charger.
• RS-232 output port: Use with a printer for reports, or a computer for analysis or data storage. Selectable manual or automatic transfer.
• Easy software calibration: Eliminates trial-and-error screwdriver adjustments.
• Available in French or Spanish: Displays all user prompts in the selected language.

This battery-operated, portable densitometer features all the accuracy and stability of the most advanced bench top units. yet designed to be even more rugged. Small enough to fit in the palm of your hand and light enough to carry in your pocket, it is a truly personal densitometer that is easy to use when and where you need it most. Use it in the pressroom, camera room, art studio, laboratory or at client meetings. anywhere precise color density should be measured.
The affordable RCP Color Reflection Densitometer has every feature needed for both pressroom and camera room use. It is rugged enough for the toughest workplace environments and as accurate as the finest bench-top units. Thanks to advanced technology microelectronics, the size and weight of the unit have been dramatically reduced. Depend on the RCP to measure all flat colors as well as black & white.

One-Hand Operation.No switches to turn on; no buttons to push. Power-on is automatic. Just position the target over your sample, select filter and press down the RCP housing to read density. To conserve battery power, the lamp shuts off after 2 seconds; the display remains on as long as RCP is held down on sample.

Rugged, Compact Design.Electronic circuitry and optical system are mounted on a firm, metal baseplate and protected by an unbreakable plastic cover. High strength, low mass design (a mere 14 oz.) that is built for years of tough pressroom use.

Long Battery Life. Thousands of measurement cycles on one 9V alkaline battery. A "LO BAT" signal on the display gives you plenty of warning when it needs replacement. An optional rechargeable NiCad battery and charger kit are also available.

Fast Filter Selection.Select the correct filter for the desired color with a simple turn of the knob. Filters are protected from direct source light and dust for long life and minimum fading.

Zero To Paper with Ease.A single thumbwheel FINE ZERO adjustment allows you to quickly offset zero to your paper base or adjust it to the calibration standard supplied with the RCP. The ZERO and CALIBRATE controls allow for periodic adjustment as well as to force conformity to another densitometer, if desired.

The affordable RBP Densitometer measures black and white densities quickly, accurately and conveniently. With all the features and advanced electronics of its companion color model, the RCP, the Tobias RBP is ideal for measuring black & white densities of halftones for exposure prediction, checking D-Max and calculating dot area.

One-Hand Operation.No switches to turn on; no buttons to push. Power-on is automatic. Just position the target over your sample and press down the RBP housing to read density. To conserve battery power, the lamp shuts off after 2 seconds; the display remains on as long as RBP is held down on sample.

Rugged, Compact Design.Electronic circuitry and optical system are mounted on a firm, metal baseplate and protected by an unbreakable plastic cover. High strength, low mass design (a mere 14 oz.) that is built for years of tough pressroom use.

Long Battery Life.Thousands of measurement cycles on one 9V alkaline battery. A "LO BAT" signal on the display gives you plenty of warning when it needs replacement. An optional rechargeable NiCad battery and charger kit are also available.

Zero to Paper With Ease.A single thumbwheel FINE ZERO adjustment allows you to quickly offset zero to your paper base or adjust it to the calibration standard supplied with the RBP. The ZERO and CALIBRATE controls allow for periodic adjustment as well as to force conformity to another densitometer, if desired.